CN107778386A - Organic micromolecule catalyst for visible light catalytic polymerisation and preparation method thereof - Google Patents

Organic micromolecule catalyst for visible light catalytic polymerisation and preparation method thereof Download PDF

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CN107778386A
CN107778386A CN201710997774.XA CN201710997774A CN107778386A CN 107778386 A CN107778386 A CN 107778386A CN 201710997774 A CN201710997774 A CN 201710997774A CN 107778386 A CN107778386 A CN 107778386A
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陈茂
赵宇澄
龚红红
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Fudan University
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    • C08F120/00Homopolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride, ester, amide, imide or nitrile thereof
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Abstract

The invention belongs to technical field of polymer chemistry, specially a kind of organic micromolecule catalyst for visible light catalytic polymerisation and preparation method thereof.The organic micromolecule catalyst of the present invention is 3,7 diphenyl phenothiazine compounds.The catalyst can be made by two step coupling reactions, the reachable visible-range of its UV absorption, and have the advantages that luminous power is strong, dosage is low, available under a variety of visible light sources, be easy to regulation and control reaction " ON/OFF ", suitable for the active free radical polymerization system of various photocontrols.Reacted under conditions of room temperature, visible ray illumination, obtain polymer.Initiation system includes RAFT, ATRP, aryl sulfonyl chloride and perfluoroalkyl iodides etc..It is controllable, narrow molecular weight distribution that relative molecular weight can be obtained under conditions of illumination(Methyl)Acrylate or(Methyl)The homopolymer or copolymer of acrylamide.

Description

Organic micromolecule catalyst for visible light catalytic polymerisation and preparation method thereof
Technical field
The invention belongs to technical field of polymer chemistry, and in particular to non-metal optical catalyst and preparation method thereof and should With.
Background technology
Controllable free-radical polymerisation(CRP)There is very far-reaching development in Macroscopic single crystal.Light-operated active free radical polymerization (photo-CRP)With the outside stimulus by " light ", "ON"/"Off" quickly starts and stopped obtaining the energy of Quality Initiative growth Power, the synthesis strategy of this more " green " are applied in important active free radical polymerization method, such as reversible addition-disconnected Split chain tra nsfer(RAFT)Polymerization, atom transferred free radical(ATRP)Polymerization etc..
The photochemical catalyst that the living free radical polymerization of visible light-inducing uses is concentrated mainly on ruthenium(Ru)And iridium(Ir) Deng the complex of transition metal, this kind of catalyst can produce redox reaction by absorption/release photon, so as to efficiently Catalytic polymerization.However, these transient metal complexes also have many shortcomings as catalyst, the post processing of polymerizate is answered Miscellaneous, used most of catalyst is not easy to remove completely from product after reaction.In addition, the polymeric material prepared due to Metal residual and exist toxicity or trigger polymer degradation reaction.Therefore, design that will not to residue in polymer and can efficient The non-metal optical oxidation reduction catalyst tool of ground catalytic activity radical polymerization is of great significance.
Phenthazine is a kind of conventional photoelectric material, is a kind of heteroaromatic compound containing electron rich N and S, and it has There is preferable redox reversible.Hawker groups are by 10- phenyl phenthazine(Periodical number:J. Am. Chem. Soc. 2014, 136,16096-16101, patent publication No.:US20170240660 A1)Photocatalyst applications are in light-operated ATRP. 10- phenyl phenthazine polymerize by Matyjaszewski seminar for acrylonitrile compound(Periodical number:ACS Macro Lett. 2015, 4, 192−196).Johnson seminar(Periodical number:ACS Macro Lett. 2015, 4, 566− 569)The RAFT that same catalyst is used for photocontrol polymerize.
However, 10- phenyl phenothiazine compounds are in UV light region(Less than 360 nm)Absorb substantially, more than 360 nm The visible region absorption of wave-length coverage is very faint, is not used to effective progress in visible region catalytic polymerization. As can be seen here, designed by deriving to phenthazine available under visible ray, absorption spectrum is wide, the efficient light of catalytic polymerization effect Catalyst tool is of great significance.
The present invention develops the significant visible ray oxidation reduction catalyst of a kind of catalytic effect, available for visible photocontrol ATRP, RAFT, perfluoroalkyl iodides and aryl sulfonyl chloride trigger the active free radical polymerization of system.
The content of the invention
The invention aims to solve the deficiencies in the prior art, there is provided a kind of for visible light catalytic polymerisation Organic micromolecule catalyst and preparation method thereof.
Organic micromolecule catalyst provided by the invention, is 3,7- diphenyl phenothiazine compounds, its structure such as following formula (I)It is shown:
,
Wherein, Z is sulphur atom or selenium atom;R is hydrogen atom, alkyl or ester group;R ' be hydrogen atom, aryl it is polysubstituted or single Substituted radical, substituent are halogen atom, hydrogen atom, alkyl or alkoxy.
The present invention also provides above-mentioned organic micromolecule catalyst(3,7- diphenyl phenothiazine compounds)Preparation method, Comprise the following steps that:
Step(1), in a heated condition, in a solvent, will be such as formula(III)Shown compound with such as formula(II)Shown phenyl Boric acid carries out coupling reaction, is made such as formula(IV)Shown photochemical catalyst intermediate;
Formula(III)In, Z is sulphur atom or selenium atom;
Formula(II)In, R is hydrogen atom, alkyl or ester group;
Wherein, the reaction time is 0.5 ~ 8 hour;Formula(III)Compound and formula(II)The mol ratio of phenylboric acid is 1:1~4;Instead It is 20 ~ 150 DEG C to answer temperature.
Step(2), in a heated condition, will be such as formula in a solvent(IV)Shown midbody compound is coupled Reaction, it is made such as formula(I)Shown photochemical catalyst;
Formula(IV)In, Z is sulphur atom or selenium atom;
R is hydrogen atom, alkyl or ester group;
Formula(IV)In, X is chlorine atom or bromine atoms;R ' is hydrogen atom, the polysubstituted or monosubstituted group of aryl, and substituent is halogen Plain atom, hydrogen atom, alkyl or alkoxy.
Wherein, the reaction time is 0.5 ~ 8 hour;Reaction temperature is 20 ~ 150 DEG C.
In the present invention, described solvent is organic solvent and/or inorganic solvent.
Described organic solvent can be single organic solvent, or the organic solvent of mixing.
Described solvent is selected from the one or more of toluene, N,N-dimethylformamide, toluene, 1,4- dioxane and water The mixed solvent of solvent.
Above-mentioned photochemical catalyst provided by the invention, the reachable visible-range of its UV absorption;And there is luminous power By force, dosage it is low, available under a variety of visible light sources, be easy to regulation and control reaction " ON/OFF " the advantages that, suitable for various photocontrols Active free radical polymerization system.
Above-mentioned photochemical catalyst provided by the invention can be used for preparing polymer under visible light.Specifically, in room temperature (10–40℃)Condition, it is seen that light illumination(Such as LED or electricity-saving lamp CFL are light source)Under conditions of reacted, Obtain polymer.
Wherein, the light source of described visible ray can be purple light, blue light, green glow, the one or more of mixed white light.Specifically For, can be sunlight, LED light, CFL lamps light or FSL lamp light etc..
When preparing polymer, system is triggered to include RAFT, ATRP, aryl sulfonyl chloride and perfluoroalkyl iodides etc..In illumination Under conditions of can to obtain relative molecular weight controllable, narrow molecular weight distribution(Methyl)Acrylate or(Methyl)Acrylamide it is equal Polymers or copolymer.
Compared with prior art, its advantage is the present invention:
The present invention obtains a series of novel photochemical catalyst of structures by reacting in step and step by step(I).The synthesis technique of the present invention Simply, efficiently, yield is high, and meets atom economy principle.The photochemical catalyst of the present invention is used to prepare polymer under visible ray.
Brief description of the drawings
Fig. 1 is the monocrystalline figure of compound 6.
Fig. 2 is compound 71H NMR。
Fig. 3 is the ultra-violet absorption spectrum of compound 7.
Fig. 4 is the GPC spectrograms of application example 3.
Embodiment
With reference to embodiment, the present invention is described in further detail.
It will be understood to those of skill in the art that the following example is merely to illustrate the present invention, and it should not be regarded as limiting this hair Bright scope.In the examples where no specific technique or condition is specified, according to the technology or condition described by document in the art Or carried out according to product description.The unreceipted production firm person such as agents useful for same, instrument, it is that can be obtained by buying Conventional products.
Raw material of the present invention can be prepared or obtained by commercially available prod by the known method of this area.
The conventional method of 3,7- diphenyl phenothiazine compounds synthesis of the invention explained further below, but the present invention 3, The preparation method of 7- diphenyl phenothiazine compounds is not limited to this.
The method for synthesizing the photochemical catalyst of the present invention is as follows:
Intermediate(IV)Synthesis is as follows:
Step 1, by formula(III)The compound and formula of structure(II)The phenylboric acid class compound of structure in appropriate solvent, have/ Without catalysts conditions, organic/inorganic alkali, heating response.After the completion of reaction, washed or recrystallized with appropriate solvent and prepare 3, 7- diphenyl phenothiazine compounds(IV), it is specific to react as follows:
Formula(III)In, Z is sulphur atom or selenium atom;
Formula(II)In, R is hydrogen atom, alkyl or ester group;
Step(2), in a heated condition, in a solvent, with/without catalysts conditions, organic/inorganic alkali will be such as formula(IV)It is shown Midbody compound carry out coupling reaction, be made such as formula(I)Shown photochemical catalyst;
Formula(IV)In, Z is sulphur atom or selenium atom;R is hydrogen atom, alkyl or ester group;Formula(IV)In, X is that chlorine atom or bromine are former Son;R ' is hydrogen atom, the polysubstituted or monosubstituted group of aryl, and substituent is halogen atom, hydrogen atom, alkyl or alkoxy.
In reaction, catalyst does not make concrete regulation, is often palladium, tetra-triphenylphosphine palladium or palladium bichloride.Alkali is not made specifically Regulation, often it is inorganic base or organic base.Solvent does not make concrete regulation, be often ethanol, acetone, methanol, water, ethyl acetate, chloroform, Dichloromethane,N,NOne or more of solvents in-dimethylformamide, tetrahydrofuran, toluene, 1,4- dioxane, acetonitrile Mixed solvent, reaction temperature do not make concrete regulation, preferably 90 ~ 150 DEG C;Reaction time does not make concrete regulation, is often 0.5 ~ 8 Hour.The washed leaching solid of evaporation solvent after reaction completely.Product recrystallizes or washing separation solvent does not make concrete regulation, Often it is methanol and mixed solvent, the ethanol of toluene.
Formula(III)And formula(IV)Compound be it is known, it is commercially available or can be prepared by known method.
In reaction, for 1 mol formula(III)Compound, formula(II)The dosage of compound is preferably 1.2 ~ 2 mol.Instead The yield answered is often greater than 90%.For 1 mol formula(IV)Compound, formula(VI)The dosage of compound is preferably 1.2 ~ 2 mol. The yield of reaction is often greater than 90%.
There is no specific requirement for the drying means present invention of product of the present invention, drying can be used, spontaneously dried, infrared lamp The drying means such as lower drying.
The present invention is described in detail with reference to part specific embodiment.These embodiments are merely to illustrate the present invention, Rather than limitation the scope of the present invention.Preparation scheme in embodiment is only preferred scheme, but the invention is not limited in excellent Select preparation scheme.
Part I synthetic example
First, formula(IV)The synthesis of photochemical catalyst intermediate
Embodiment 1:Synthesize 3,7- diphenyl -10H- phenthazine(Compound 1)
The bromo- 10H- phenthazine of 3,7- bis- is added in 100 mL Schleck bottles(5 mmol, 1.77 g), tetra-triphenylphosphine palladium (0.135 mmol, 156 mg), phenylboric acid(15 mmol, 1.83 g)And Anhydrous potassium carbonate(15 mmol, 2.07 g) Afterwards, toluene is added(25 mL), Isosorbide-5-Nitrae-dioxane(25 mL)And water(1ml), under nitrogen atmosphere, 110 DEG C are reacted 8 hours.It is cold But to room temperature, 100 ml water are added, after being extracted with 100 ml ethyl acetate, with anhydrous sodium sulfate drying, after removing solvent under reduced pressure Recrystallized with toluene and methanol, washed after filtering with a small amount of ethanol, obtain the g of yellow solid 1.47, be dried in vacuo product 3,7- hexichol Base -10H- phenthazine(Compound 1), yield 84%.Fusing point:275.5–276.7℃.
Spectral data is:1H NMR (400 MHz, DMSO-d 6) δ: 8.85 (br, 1H), 7.58–7.60 (m, 4H), 7.39–7.43 (m, 4H), 7.25–7.34 (m, 6H), 6.78 (d, J = 8.3 Hz, 2H); 13C NMR (100 MHz, DMSO-d 6) δ: 141.4, 139.6, 134.2, 129.3, 127.3, 126.4, 126.2, 124.6, 117.3, 115.3。
Embodiment 2:Double (4- the butyl phenyls) -10H- phenthazine of 3,7-(Compound 2)
The bromo- 10H- phenthazine of 3,7- bis- is added in 100 milliliters of Schleck bottles(5 mmol, 1.77 g), tetra-triphenylphosphine palladium (0.135 mmol, 156 mg),(4- butyl phenyls)Boric acid(15 mmol, 2.65 g)And Anhydrous potassium carbonate(15 mmol, 2.07 g)Afterwards, toluene is added(25 mL), Isosorbide-5-Nitrae-dioxane(25 mL)And water(1 ml), under nitrogen atmosphere, 110 DEG C of reactions 8 Hour.Room temperature is cooled to, adds 100 ml water, after being extracted with 100 ml ethyl acetate, with anhydrous sodium sulfate drying, solvent is evaporated off Recrystallized with toluene and methanol, washed after filtering with a small amount of ethanol afterwards, obtain the g of yellow solid 1.81, be dried in vacuo product 3,7- is double (4- butyl phenyls) -10H- phenthazine(Compound 2), yield 78%.Fusing point:281.3–282.7℃.
Spectral data is:1H NMR (400 MHz, Acetone-d6) δ: 8.04 (br, 1H), 7.49–7.57 (m, 4H), 7.25–7.31 (m, 8H), 6.81 (d, J = 8.2 Hz, 2H), 2.63–2.67 (m, 4H), 1.59–1.67 (m, 4H), 1.30–1.41(m, 4H), 0.95 (t, J = 7.3 Hz, 6H); 13C NMR (100 MHz, DMSO-d6) δ: 141.4, 141.2, 137.0, 134.2, 129.2, 126.0, 124.4, 117.8, 117.2, 115.2, 34.9, 33.6, 22.2, 14.3; HRMS (TOF ES+): m/z calcd for C32H34NS+ [M+H]+, 464.2406; found, 464.2410。
Embodiment 3:Synthesize double (4- (tert-butyl group) the phenyl) -10H- phenthazine of 3,7-(Compound 3)
The bromo- 10H- phenthazine of 3,7- bis- is added in 100 milliliters of Schleck bottles(5 mmol, 1.77 g), four triphenylphosphines Palladium(0.135 mmol, 156 mg), (4- (tert-butyl group) phenyl) boric acid(15 mmol, 2.65 g)And Anhydrous potassium carbonate(15 mmol, 2.07 g)Afterwards, toluene is added(25 mL), Isosorbide-5-Nitrae-dioxane(25 mL)And water(1 mL), under nitrogen atmosphere, 110 DEG C reaction 8 hours.It is cooled to room temperature, adds 100 mL water, after being extracted with 100 mL ethyl acetate, with anhydrous sodium sulfate drying, Recrystallized with toluene and methanol after solvent is evaporated off, washed after filtering with a small amount of ethanol, obtain the g of yellow solid 1.88, vacuum drying production Double (4- the butyl phenyls) -10H- phenthazine of product 3,7-(Compound 3), yield 81%.Fusing point:320.0–319.5℃.
Embodiment 4:Synthesize 4,4'- (10H- phenthazine -3,7- diyls) dibenzoic acid diethylester(Compound 4)
The bromo- 10H- phenthazine of 3,7- bis- is added in 100 milliliters of Schleck bottles(5 mmol, 1.77 g), tetra-triphenylphosphine palladium (0.135 mmol, 156 mg), (4- (ethoxy carbonyl) phenyl) boric acid (15 mmol, 2.91 g)And Anhydrous potassium carbonate (15 mmol, 2.07 g)Afterwards, toluene is added(25 mL), Isosorbide-5-Nitrae-dioxane(25 mL)And water(1 mL), in blanket of nitrogen Under, 110 DEG C are reacted 8 hours.Room temperature is cooled to, adds 100 mL water, after being extracted with 100 mL ethyl acetate, uses anhydrous sodium sulfate Dry, recrystallized with toluene and methanol after solvent is evaporated off, washed after filtering with a small amount of ethanol, obtain the g of yellow solid 2.03, vacuum is done Double (4- the butyl phenyls) -10H- phenthazine of dry product 3,7-(Compound 4), yield 82%.Fusing point:198.2–200.2℃.
Spectral data is:1H NMR (400 MHz, DMSO-d6) δ: 9.03 (br, 1H), 7.96–7.99 (m, 4H), 7.75–7.77 (m, 4H), 7.42 (dd, J = 8.3, 2.1 Hz, 2H), 7.36 (d, J = 2.1 Hz, 2H), 6.78 (d, J = 8.3 Hz, 2H), 4.33 (q, J = 7.1 Hz, 4H), 1.34 (t, J = 7.1 Hz, 6H)。
2nd, photochemical catalyst formula(I)Synthesis
Embodiment 5:Synthesize 10- (4- butyl phenyls) -3,7- diphenyl -10H- phenthazine(Compound 5)
NaO is added in the Schleck equipped with magnetic agitationtBu(134 mg, 1.4mmol), compound 1(351 mg, 1 mmol), RuPhos Precat(14 mg, 0.02 mmol, 2 mol%)And RuPhos(8mg, 0.02 mmol, 2 Mol%).Bottle is vacuumized and backfilled 3 times with nitrogen, then adds dry Isosorbide-5-Nitrae-dioxane(1 mL).It is eventually adding 4- fourths Bromide benzene(298 mg, 1.4 mmol).Then it reacts 5 hours in 110 DEG C of oil bath.Then bottle is cooled to room temperature, Diluted with ethyl acetate, with water, salt water washing, use MgSO4Dry, and use column chromatography(0.5% ethyl acetate/petroleum ether)It is pure Change.Product is dried under reduced pressure, obtains 458 mg yellow solids(95% yield).Fusing point:65.1–67.2℃.
Embodiment 6:Synthesize double (4- the butyl phenyls) -10- phenyl -10H- phenthazine of 3,7-(Compound 6)
NaO is added in the Schleck equipped with magnetic agitationtBu(134 mg, 1.4 mmol), compound 2(463.2 mg, 1 mmol), RuPhos Precat(14 mg, 0.02 mmol, 2 mol%)And RuPhos(8 mg, 0.02 mmol, 2 Mol%).Bottle is vacuumized and backfilled 3 times with nitrogen, then adds dry Isosorbide-5-Nitrae-dioxane(1 mL).It is eventually adding bromobenzene (219.8 mg, 1.4 mmol).Then the bottle is stirred 5 hours in 110 DEG C of oil bath.Then bottle is cooled to room Temperature, diluted with ethyl acetate, with water, salt water washing, MgSO4Dry, and use column chromatography(1% toluene/petroleum ether)Purifying.Will Product is dried under reduced pressure, and obtains 521.5 mg yellow solids(97% yield).Fusing point:78.5–80.2℃.
Spectral data is:1H NMR (400 MHz,Acetone-d6) δ: 7.73–7.77 (m, 2H), 7.60– 7.64 (m, 1H), 7.49 –7.52 (m, 5H), 7.35–7.35 (m, 2H), 7.24– 7.26 (m, 4H), 7.18– 7.21 (m, 2H), 6.26 (d, J = 8.6 Hz, 2H), 2.64 (t, J = 7.6 Hz, 4H), 1.58– 1.66 (m, 4H), 1.33–1.42 (m, 4H), 0.94 (t, J = 7.4 Hz, 6H); 13C N MR (100 MHz, Acetone-d6) δ: 143.0, 141.7, 140.9, 136.8, 135.4, 131.1, 130.9, 128.9, 128.6, 126.0,125.2, 124.4, 120.0, 116.2, 34.9, 33.6, 22.1, 13.3; IR (neat, cm-1): 3022, 2954, 2924, 2854, 1589, 1475, 1382, 1308, 1254, 1153, 1072, 938, 880, 807, 733, 699, 673, 616, 589, 530, 501; HRMS (TOF ES+): m/z ca lcd for C38H36NS+ [M]+, 539.2647; found, 539.2640。
Embodiment 7:Synthesize double (4- the butyl phenyls) -10H- phenthazine of 10- ([1,1'- biphenyl] -4- bases) -3,7-(Chemical combination Thing 7)
4- bromo biphenyls are added in the Schleck equipped with magnetic agitation(326 mg, 1.4 mmol), NaOtBu(134 mg, 1.4 mmol), compound 2(463.2 mg, 1 mmol), RuPhos Precat(14 mg, 0.02 mmol, 2 mol%)With RuPhos(8 mg, 0.02 mmol, 2 mol%).Bottle is vacuumized and backfilled 3 times with nitrogen, then adds dry Isosorbide-5-Nitrae-dioxy Six rings(1 mL).Then the bottle is stirred 5 hours in 110 DEG C of oil bath.Then bottle is cooled to room temperature, with acetic acid second Ester dilutes, with water, salt water washing, MgSO4Dry, and use column chromatography(1% toluene/petroleum ether)Purifying.By product under reduced pressure Dry, obtain 592mg green solids(96% yield).Fusing point:133.0–134.6℃.
Spectral data is:1H NMR (400 MHz, DMSO-d6) δ: 8.00 (d, J = 8.0 Hz, 2H), 7.81 (d, J = 7.6 Hz, 2H), 7.39–7.58 (m, 11H), 7.22–7.26 (m, 6H), 6.29 (d, J = 8.6 Hz, 2H), 2.59 (t, J = 7.7 Hz, 4H), 1.52–1.60 (m, 4H), 1.29–1.36 (m, 4H), 0.90 (t, J = 7.3 Hz, 6H); 13C NMR (100 MHz, DMSO-d6) δ: 142.8, 141. 8, 140.3, 139.7, 136.6, 135.3, 131.0, 129.7, 129.5, 129.2, 128.3, 127.3, 126.4, 126.3, 125.8, 124.8, 12 0.4, 117.0, 34.9, 33.4, 22.2,14.2 ; IR (neat, cm-1): 3025, 2923, 2859, 1631, 1468, 1379, 1308, 1288, 1 252, 1103, 843, 810, 728, 699, 471; HRMS (TOF ES+): m/z calcd for C44H42NS+ [M+H]+, 616.3032; found, 616.3029。
Embodiment 8:Synthesize double (4- butyl phenyls) -10- (naphthalene -2- the bases) -10H- phenthazine of 3,7-(Compound 8)
2- bromonaphthalenes are added in the Schleck equipped with magnetic agitation(290 mg, 1.4 mmol), NaOtBu(134mg, 1.4 mmol), compound 2(463.2 mg, 1 mmol), RuPhos Precat(14 mg, 0.02 mmol, 2 mol%)With RuPhos(8 mg, 0.02 mmol, 2 mol%).Bottle is vacuumized and backfilled 3 times with nitrogen, then adds dry Isosorbide-5-Nitrae-dioxy Six rings(1 mL).Then the bottle is stirred 5 hours in 110 DEG C of oil bath.Then bottle is cooled to room temperature, with acetic acid second Ester dilutes, with water, salt water washing, MgSO4Dry, and use column chromatography(1% toluene/petroleum ether)Purifying.By product under reduced pressure Dry, obtain 561mg greenish yellow solids(95% yield).Fusing point:85.1–86.7℃.
HRMS (TOF ES+): m/z calcd for C42H40NS+ [M+H]+, 590.2876; found, 590.2874.
Embodiment 9:Synthesize double (4- butyl phenyls) -10- (- 1- the bases) -10H- phenthazine of 3,7-(Compound 9)
The 2- bromonaphthalenes in embodiment 8 are replaced to be reacted to obtain 685 mg orange solids with 1- bromos(95% yield).Fusing point: 116.4–118.0℃。
Embodiment 10:Synthesize 3,7,10- tri- (4- (tert-butyl group) phenyl) -10H- phenthazine(Compound 10)
4- tert-butyl group bromobenzenes are added in the Schleck equipped with magnetic agitation(298 mg, 1.4 mmol), NaOtBu(134 mg, 1.4 mmol), compound 2(463.2 mg, 1 mmol), RuPhos Precat(14 mg, 0.02 mmol, 2 mol%)With RuPhos(8 mg, 0.02 mmol, 2 mol%).Bottle is vacuumized and backfilled 3 times with nitrogen, then adds dry Isosorbide-5-Nitrae-dioxy Six rings(1 mL).Then the bottle is stirred 5 hours in 110 DEG C of oil bath.Then bottle is cooled to room temperature, with acetic acid second Ester dilutes, and with water, salt water washing, uses MgSO4Dry, and use column chromatography(1% toluene/petroleum ether)Purifying.Product is being depressurized Lower drying, obtain 555 mg green solids(94% yield).Fusing point:281.1–282.8℃.
Embodiment 11:Synthesize 4,4'- (10- ([1,1'- biphenyl] -4- bases) -10H- phenthazine -3,7- diyls) hexichol first Diethyl phthalate(Compound 11)
4- bromo biphenyls are added in the Schleck equipped with magnetic agitation(326 mg, 1.4 mmol), NaOtBu(134 mg, 1.4 mmol), compound 3(496 mg, 1 mmol), RuPhos Precat(14 mg, 0.02 mmol, 2 mol %)With RuPhos(8 mg, 0.02 mmol, 2 mol%).Bottle is vacuumized and backfilled 3 times with nitrogen, then adds dry Isosorbide-5-Nitrae-dioxy Six rings(1 mL).Then the bottle is stirred 5 hours in 110 DEG C of oil bath.Then bottle is cooled to room temperature, with acetic acid second Ester dilutes, with water, salt water washing, MgSO4Dry, and use column chromatography(1% ethyl acetate/petroleum ether)Purifying.Product is being subtracted Drying is depressed, obtains 589 mg green solids(91% yield).
HRMS (TOF ES+): m/z calcd for C42H40NS+ [M+H]+, 648.220; found, 648.2204.
Embodiment 12:Synthesize 4,4'- (10- (naphthalene -2- bases) -10H- phenthazine -3,7- diyls) dibenzoic acid diethylester(Chemical combination Thing 12)
The 4- bromo biphenyls in embodiment 10 are replaced to be reacted to obtain 577 mg green solids with 2- bromonaphthalenes(93% yield).1H NMR (400 MHz, DMSO-d6) δ: 8.26 (d, J = 8.6 Hz, 1H), 8.04–8.11 (m, 3H), 7.94– 7.96 (m, 4H), 7.49–7.72 (m, 9H), 6.18 (d, J = 8.5 Hz, 2H), 4.31 (q, J = 7.0 Hz, 4H), 1.31 (t, J = 6.9 Hz, 6H)。
Intermediate structure synthesized by the present invention is as shown in table 1:
The intermediate structure formula of table 1(Lower section numeral is embodiment compound number)
Photocatalyst structure synthesized by the present invention is as shown in table 2:
The photocatalyst structure formula of table 2(Lower section numeral is embodiment compound number)
The photocatalysis effect of Part II the compounds of this invention
By the present invention in that with invention non-metal optical catalyst, under visible light, respectively to three class living radical primosomes System(ATRP, RAFT and perfluoroalkyl iodides), with(Methyl)Acrylate or(Methyl)Acrylic acid amides are monomer, are carried out light-operated Active free radical polymerization.
As a result show that the catalyst used in the present invention is changed into excitation state under illumination effect from ground state.Urging in excitation state With dormancy kind redox reaction can occur for agent, so as to generate alkyl diradical, further trigger the chain of monomer to increase instead Should.In addition, the photochemical catalyst in oxidation state, can occur again with living chain redox reaction generation ground state catalyst with And dormancy kind.Reversible balance between this dormancy kind and growing chain free radical causes polymerization system to have controllability, and finally Obtain homopolymer and block copolymer.
Application Example 1
Methyl methacrylate is added in the bottle equipped with magnetic stir bar(206 μ L, 2.00 mmol), compound 5(0.1 Mol%)And DMA(1 mL).Reactant mixture is freezed into-pumping-defrosting-nitrogen backfill circulation three times.Injected by syringe α-bromo-acid ethyl ester(0.02 mmol).Reactant is stirred vigorously under the irradiation of 13 W purple LEDs, while uses compressed air Cool down to keep environment temperature.Reaction is carried out 24 h, pass through1The conversion ratio for the MMA that H NMR are surveyed is 52%, sample volume Than for 7:The mixing liquid precipitate of 3 first alcohol and water three times, is dried under vacuum to constant weight, obtains white powder.GPC measures polymerization The molecular weight of thingM n=6223 and molecular weight distributionM w/M n = 1.26.The above-mentioned white PMMA of 75 mg are taken to trigger as macromolecular Agent, methyl acrylate will be added in the bottle equipped with magnetic agitation(91 μ L, 1.00 mmol), compound 7(0.1 mol%)With DMF(1 mL).Reactant mixture is freezed into-pumping-defrosting-nitrogen backfill circulation three times.It is acute under the irradiation of 13 W white led lamps Strong reaction stirred, while cooled down with compressed air to keep environment temperature.Reaction is carried out 4 h, pass through1What H NMR were surveyed MA conversion ratio is the molecular weight that 63%, GPC measures polymerM n=12158 and molecular weight distributionM w/M n = 1.57。
Application Example 2
N-butyl acrylate will be added in bottle equipped with magnetic stir bar(286 μ L, 2.00 mmol), paratoluensulfonyl chloride (0.02 mmol), compound 8(0.1 mol%)And DMF(1 mL).Reactant mixture is freezed into-pumping-defrosting-nitrogen time Fill out circulation three times.Reactant is stirred vigorously under blue LED lamp irradiation, while is cooled down with compressed air to keep environment temperature. Reaction is carried out 5 h, pass through1What H NMR were surveyednBA conversion ratio is 54%, and sample volume ratio is 10:1 acetone and The mixing liquid precipitate of ether three times, is dried under vacuum to constant weight.GPC measures the molecular weight of polymerM n =7265 and molecular weight point ClothM w/M n = 1.50.Take the above-mentioned P of 100 mgnBA will be equipped with magnetic agitation bottle and add as macromole evocating agentN,N- two Methacrylamide(113 μ L, 1.00 mmol), compound 7(0.1 mol%)And DMF(1 mL).Reactant mixture is cold Jelly-pumping-defrosting-nitrogen backfill circulation is three times.Reactant is stirred vigorously under the irradiation of 13 W white led lamps, while with compressing Air is cooled down to keep environment temperature.Reaction is carried out 4 h, pass through1The conversion ratio for the DMA that H NMR are surveyed measures for 85%, GPC To the molecular weight of polymerM n =20175 and molecular weight distributionM w/M n = 1.77。
Application Example 3
Methyl acrylate will be added in bottle equipped with magnetic stir bar(181 μ L, 2.00 mmol), 2- (((own sulfenyl) sulphur Generation) thio) ethyl propionate(0.02 mmol), compound 9(0.1 mol%)And DMSO(1 mL).Reactant mixture is cold Jelly-pumping-defrosting-nitrogen backfill circulation is three times.Reactant is stirred vigorously under blue LED lamp irradiation, while uses compressed air Cool down to keep environment temperature.Reaction is carried out 2h, pass through1The conversion ratio for the MA that H NMR are surveyed is 54%, sample volume ratio For 10:The mixing liquid precipitate of 1 first alcohol and water three times, is dried under vacuum to constant weight.GPC measures the molecular weight of polymerM n =4647 and molecular weight distributionM w/M n = 1.19.The above-mentioned PMA of 58 mg are taken as macromole evocating agent, by equipped with magnetic agitation Added in bottlenBA(143 μ L, 1.00 mmol), compound 7(0.1 mol%)And DMF(1 mL).By reactant mixture with three Secondary freezing-pumping-defrosting thaw cycles degassing.Then bottle is backfilled with nitrogen, acutely stirred under the irradiation of 13 W white led lamps Reactant is mixed, while is cooled down with compressed air to keep environment temperature.Reaction is carried out 3 h, pass through1What H NMR were surveyednBA's Conversion ratio is the molecular weight that 90%, GPC measures polymerM n=13940 and molecular weight distributionM w/M n = 1.41。
Application Example 4
Methyl acrylate will be added in bottle equipped with magnetic agitation(181 μ L, 2.00 mmol), perfluor butyl iodide(0.02 mmol), compound 11(0.1 mol%)And DMSO(1 mL).By reactant mixture freezing freezing-pumping-defrosting solution three times Freeze circulating degasification.Reactant is stirred vigorously under white led lamps irradiation, while is cooled down with compressed air to keep environment temperature. Reaction is carried out 10 h, pass through1 The conversion ratio for the MA that H NMR are surveyed is 62%, and sample volume ratio is 10:1 acetone and The mixing liquid precipitate of ether three times, is dried under vacuum to constant weight.GPC measures the molecular weight of polymerM n=7432 and molecular weight DistributionM w/M n = 1.43.The above-mentioned PMA of 104 mg are taken to be equipped with magnetic stirring bar bottle and add as macromole evocating agent NiPAm(113 mg, 1.00 mmol), compound 7(0.1 mol%)And DMSO(1 mL).Reactant mixture use is cold three times Jelly-pumping-defrosting thaw cycles degassing.Reactant is stirred vigorously under the irradiation of 13 W white led lamps, at the same it is cold with compressed air But to keep environment temperature.Reaction is carried out 3 h, pass through1The conversion ratio for the NiPAm that H NMR are surveyed measures poly- for 90%, GPC The molecular weight of compoundM n=16543 and molecular weight distributionM w/Mn = 1.56。
General principle, principal character and the advantages of the present invention of the present invention has been shown and described above.The technology of the industry Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its Equivalent thereof.

Claims (10)

1. it is 3,7- diphenyl phenothiazine compounds a kind of organic molecule photochemical catalyst, its structure such as following formula (I)It is shown:
,
Wherein, Z is sulphur atom or selenium atom;R is hydrogen atom, alkyl or ester group;R ' be hydrogen atom, aryl it is polysubstituted or single Substituted radical, substituent are halogen atom, hydrogen atom, alkyl or alkoxy.
2. the preparation method of organic molecule photochemical catalyst as claimed in claim 1, it is characterised in that concretely comprise the following steps:
Step(1), in a heated condition, in a solvent, will be such as formula(III)Shown compound with such as formula(II)Shown phenyl Boric acid carries out coupling reaction, is made such as formula(IV)Shown photochemical catalyst intermediate;Its reaction equation is:
Formula(III)In, Z is sulphur atom or selenium atom;
Formula(II)In, R is hydrogen atom, alkyl or ester group;
Step(2), in a heated condition, will be such as formula in a solvent(IV)Shown midbody compound carries out coupling reaction, It is made such as formula(I)Shown photochemical catalyst;Its reaction equation is:
Formula(IV)In, Z is sulphur atom or selenium atom;
R is hydrogen atom, alkyl or ester group;
Formula(IV)In, X is chlorine atom or bromine atoms;R ' is hydrogen atom, the polysubstituted or monosubstituted group of aryl, and substituent is halogen Plain atom, hydrogen atom, alkyl or alkoxy.
3. preparation method according to claim 2, it is characterised in that step(1)In, the reaction time is 0.5 ~ 8 hour;Formula (III)Compound and formula(II)The mol ratio of phenylboric acid is 1:1~4;Reaction temperature is 20 ~ 150 DEG C.
4. preparation method according to claim 2, it is characterised in that step(2)In, the reaction time is 0.5 ~ 8 hour;Instead It is 20 ~ 150 DEG C to answer temperature.
5. preparation method according to claim 2, it is characterised in that described solvent is organic solvent and/or inorganic molten Agent.
6. preparation method according to claim 5, it is characterised in that described solvent is toluene, N, N- dimethyl formyls Amine, toluene, 1,4- dioxane and water one or more of solvents mixed solvent.
7. organic molecule photochemical catalyst as claimed in claim 1 prepares the application in polymer under visible light.
8. the application described in claim 7, it is characterised in that the light source of described visible ray is purple light, blue light, green glow, is mixed The one or more of white light.
9. application according to claim 7, it is characterised in that the light source of described visible ray be sunlight, LED light, CFL lamps light or FSL lamp light.
10. application according to claim 7, it is characterised in that for initiator system it is RAFT, ATRP, perfluoroalkyl The active free radical polymerization of iodine or aryl sulfonyl chloride.
CN201710997774.XA 2017-10-24 2017-10-24 Organic micromolecule catalyst for visible light catalytic polymerisation and preparation method thereof Pending CN107778386A (en)

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