Summary of the invention
The present invention provides a kind of preparation method of compound shown in formula 4,
Including under the conditions of photochemical catalyst, 1 compound of formula, 2 compound of formula and 3 compound of formula react 4 compound of acquisition formula
The step of,
Wherein, R1、R2Selected from hydrogen, alkyl, alkenyl, alkynyl, naphthenic base, heterocycle, aryl and heteroaryl, wherein described
Alkyl, alkenyl, alkynyl, naphthenic base, heterocycle, aryl and heteroaryl optionally by selected from alkyl, halogen, hydroxyl, amino, oxygroup,
Replaced one or more substituent groups in carboxyl, nitro, cyano, alkoxy, naphthenic base, heterocycle, aryl and heteroaryl, or
Person, R1And R2Carbon atom adjacent thereto is formed together 5 yuan to 10 yuan carbocyclic rings, heterocycle or condensed ring, preferably 6 yuan to 8 yuan carbocyclic rings, heterocycles
Or condensed ring, the carbocyclic ring, heterocycle or condensed ring optionally by selected from alkyl, halogen, hydroxyl, amino, oxygroup, carboxyl, nitro, cyano,
Replaced one or more substituent groups in alkoxy, naphthenic base, heterocycle, aryl and heteroaryl;
R3、R4、R5, R6Selected from hydrogen, alkyl, alkenyl, alkynyl, naphthenic base, heterocycle, aryl and heteroaryl, wherein described
Alkyl, alkenyl, alkynyl, naphthenic base, heterocycle, aryl and heteroaryl optionally by selected from alkyl, halogen, hydroxyl, amino, oxygroup,
Replaced one or more substituent groups in carboxyl, nitro, cyano, alkoxy, naphthenic base, heterocycle, aryl and heteroaryl,
Alternatively,
R5And R6Carbon atom adjacent thereto is formed together 5 yuan to 10 yuan carbocyclic rings, heterocycle or condensed ring, preferably 6 yuan to 8 yuan carbocyclic rings,
Heterocycle or condensed ring, the carbocyclic ring, heterocycle or condensed ring are optionally selected from alkyl, halogen, hydroxyl, amino, oxygroup, carboxyl, nitro, cyanogen
Replaced one or more substituent groups in base, alkoxy, naphthenic base, heterocycle, aryl and heteroaryl;
Alternatively,
R3And R6Carbon atom adjacent thereto is formed together 5 yuan to 10 yuan carbocyclic rings, heterocycle or condensed ring, preferably 6 yuan to 8 yuan carbocyclic rings,
Heterocycle or condensed ring, the carbocyclic ring, heterocycle or condensed ring are optionally selected from alkyl, halogen, hydroxyl, amino, oxygroup, carboxyl, nitro, cyanogen
Replaced one or more substituent groups in base, alkoxy, naphthenic base, heterocycle, aryl and heteroaryl;
P is selected from trimethyl silicon substrate, triisopropylsilyl or dimethyl tertiary butyl silicon substrate, preferably is selected from triisopropylsilyl;
N is the integer between 2~10.
Further, the photochemical catalyst is selected from acriflavine.
In some embodiments, it is the 0.1~1% of 3 compound mole of formula that light, which urges the dosage of agent, in the reaction, can
Think 0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9,1.0%.
In some embodiments, R described in the method for the invention1Selected from phenyl, naphthalene and pyridyl group, the benzene
Base, naphthalene and pyridyl group are optionally selected from C1-6Alkyl (such as methyl, ethyl or isopropyl), halogen (such as Cl, Br or I), hydroxyl (-
OH), amino (- NH2), carboxyl, nitro, cyano, C1-6Alkoxy (such as methoxyl group, ethyoxyl), C3-8Naphthenic base (such as cyclopropyl,
Cyclohexyl), C3-8One in heterocycle (such as pyrrole radicals, furyl), aryl (such as phenyl, naphthalene) and heteroaryl (such as pyridyl group)
Replaced a or multiple substituent groups.
In some embodiments, R described in the method for the invention2Selected from hydrogen.
In some embodiments, R1And R2Carbon atom adjacent thereto is formed together hexamethylene, and the hexamethylene is preferably by benzene
Replaced at least one of base, such as flowering structure is formed:
In some embodiments, R described in the method for the invention3、R4、R5, R6Selected from hydrogen, C1-6Alkyl (such as methyl,
Ethyl or isopropyl), C2-8Alkenyl, C2-8Alkynyl, C3-8Naphthenic base (such as cyclopropyl, cyclohexyl), C3-8Heterocycle (such as pyrrole radicals,
Furyl), aryl (such as phenyl, naphthalene) and heteroaryl (such as pyridyl group), wherein the alkyl, alkenyl, alkynyl, naphthenic base,
Heterocycle, aryl and heteroaryl optionally by selected from alkyl, halogen, hydroxyl, amino, oxygroup, carboxyl, nitro, cyano, alkoxy,
Replaced one or more substituent groups in naphthenic base, heterocycle, aryl and heteroaryl.
In some embodiments, the compound of formula 3 described in the method for the invention is selected from:
In some embodiments, the formula 4 is mixed body, and further, the dr of compound shown in the formula 4 is (non-right
Reflect the ratio of isomers) value is greater than or equal to 1:1, can be 1:1,2:1,3:1,4:1,5:1,6:1,7:1,8:1,9:1,10:
1,11:1,12:1,13:1,14:1,15:1,16:1,17:1,18:1,19:1,20:1 or higher, preferably greater than 20:1.
Further, the compound of formula 4 described in the method for the invention is selected from:
It on the other hand, further include alkali in reaction of the present invention, the presence of alkali is conducive to going on smoothly for reaction, and shows more
Effect.In some embodiments, the alkali be selected from triethylene diamine (DABCO), diisopropylamine (iPr2NH), preferred triethylene
Diamines.
Further, reaction solvent for use of the present invention is selected from acetonitrile, n,N-Dimethylformamide, acetone and tetrahydro furan
It mutters, preferably acetonitrile.
Light emitting diode can provide the light source of different frequency, wave band or watt, reaction of the present invention for illumination reaction
Light source used is from 4.5 watts of white light-emitting diodes.
In other embodiments, reaction temperature of the present invention is selected from 10~50 DEG C, can for 10,15,20,25,
30,35,40,45 and 50, preferably 15~30 DEG C.
In the preferred scheme, the method for the invention is included in photochemical catalyst acriflavine (Acriflavine), alkali
Triethylene diamine, under conditions of acetonitrile as solvents, 1 compound of formula, 2 compound of formula and 3 compound of formula react 4 compound of acquisition formula
The step of.
On the other hand, 2~8 equivalents of the dosage of alkali for 3 compound mole of formula, Ke Yiwei in the method for the invention
2,3,4,5,6,7 and 8 or the molar ratio of alkali and 3 compound of formula be 2:1~8:1.
In some embodiments, the molar ratio of 2 compound of the method for the invention Chinese style and 3 compound of formula be 1:1~
5:1 can be 1:1,2:1,3:1,4:1 and 5:1.
In some embodiments, the molar ratio of 3 compound of the method for the invention Chinese style and 1 compound of formula be 1:1~
2:1 can be 1:1,1.1:1,1.2:1,1.3:1,1.4:1,1.5:1,1.6:1,1.7:1,1.8:1,1.9:1 and 2:1.
Further, in preparation method of the present invention further include any in being filtered, washed, be concentrated, dry or purifying
Step obtains 4 compound of target product formula of purifying.
The present invention also provides a kind of preparation method of compound shown in formula 4,
Including, the step of 1 ' compound of formula is converted into 1 compound of formula,
Then under the conditions of photochemical catalyst, 1 compound of formula, 2 compound of formula and 3 compound of formula react 4 compound of acquisition formula
The step of,
Further, the method for 4 compound of preparation formula is " one pot of multistep processes ", i.e., in same reaction system, is during which not necessarily to
Subsequent reaction occurs for the step of isolated or purified, continuity,
In some embodiments, the reagent choosing of P functional group is provided in the step of 1 ' compound of formula is converted into 1 compound of formula
From but be not limited to tert-butyl dimethyl silyl triflate (TBSOTf), triisopropylsilyl triflate
(TIPSOTf) or Trimethylsilyl trifluoromethanesulfonate (TMSOTf).
In some embodiments, the molar ratio of 1 ' compound of formula and the reagent of offer P functional group is between 1:1~1:3
Arbitrary value, including but not limited to 1:1,1:1.5,1:2,1:2.5 and 1:3.
In some embodiments, solvent or used molten is not used in the step of 1 ' compound of formula is converted into 1 compound of formula
Agent is selected from but not limited to ethyl or tetrahydrofuran.
Further, in order to be conducive to the formation of silyl enol ether, there are also alkali in reaction, the alkali is selected from but not limited to three second
Amine, triisopropylamine or pyridine.
On the other hand, the formation temperature of the silyl enol ether is selected from 10~50 DEG C, can for 10,15,20,25,30,
35,40,45 and 50, preferably 15~30 DEG C.
Another aspect of the present invention provides a kind of method for preparing drug, fragrance and pesticide, including formula of the present invention 4
The preparation method of shown compound.
Unless stated to the contrary, the term used in the specification and in the claims has following meanings.
Term " alkyl " refers to saturated aliphatic hydrocarbons group, is the linear chain or branched chain group comprising 1 to 20 carbon atom, excellent
Select the alkyl containing 1 to 12 carbon atom.Non-limiting example includes methyl, ethyl, n-propyl, isopropyl, normal-butyl, isobutyl
Base, tert-butyl, sec-butyl, n-pentyl, 1,1- dimethyl propyl, 1,2- dimethyl propyl, 2,2- dimethyl propyl, 1- ethyl third
Base, 2- methyl butyl, 3- methyl butyl, n-hexyl, 1- Ethyl-2-Methyl propyl, 1,1,2- thmethylpropyl, 1,1- dimethyl
Butyl, 1,2- dimethylbutyl, 2,2- dimethylbutyl, 1,3- dimethylbutyl, 2- ethyl-butyl, 2- methyl amyl, 3- first
Base amyl, 4- methyl amyl, 2,3- dimethylbutyl, n-heptyl, 2- methylhexyl, 3- methylhexyl, 4- methylhexyl, 5- first
Base hexyl, 2,3- dimethyl amyl group, 2,4- dimethyl amyl group, 2,2- dimethyl amyl group, 3,3- dimethyl amyl group, 2- ethyl penta
Base, 3- ethylpentyl, n-octyl, 2,3- dimethylhexanyl, 2,4- dimethylhexanyl, 2,5- dimethylhexanyl, 2,2- dimethyl
Hexyl, 3,3- dimethylhexanyl, 4,4- dimethylhexanyl, 2- ethylhexyl, 3- ethylhexyl, 4- ethylhexyl, 2- methyl -2-
Ethylpentyl, 2- methyl -3- ethylpentyl, n-nonyl, 2- methyl -2- ethylhexyl, 2- methyl -3- ethylhexyl, 2,2- bis-
Ethylpentyl, positive decyl, 3,3- diethylhexyl, 2,2- diethylhexyl and its various branched isomers etc..More preferably
Low alkyl group containing 1 to 6 carbon atom, non-limiting embodiment include methyl, ethyl, n-propyl, isopropyl, normal-butyl,
Isobutyl group, tert-butyl, sec-butyl, n-pentyl, 1,1- dimethyl propyl, 1,2- dimethyl propyl, 2,2- dimethyl propyl, 1- second
Base propyl, 2- methyl butyl, 3- methyl butyl, n-hexyl, 1- Ethyl-2-Methyl propyl, 1,1,2- thmethylpropyl, 1,1- bis-
Methyl butyl, 1,2- dimethylbutyl, 2,2- dimethylbutyl, 1,3- dimethylbutyl, 2- ethyl-butyl, 2- methyl amyl,
3- methyl amyl, 4- methyl amyl, 2,3- dimethylbutyl etc..Alkyl can be it is substituted or non-substituted, when substituted,
Substituent group can be substituted on any workable tie point, and the substituent group is preferably one or more following groups,
Independently selected from alkyl, alkenyl, alkynyl, alkoxy, alkylthio group, alkyl amino, halogen, sulfydryl, hydroxyl, nitro, cyano, cycloalkanes
Base, Heterocyclylalkyl, aryl, heteroaryl, cycloalkyloxy, heterocyclylalkoxy groups, cycloalkylthio, heterocycle alkylthio group, oxo base, carboxyl or
Carboxylate.
Term " naphthenic base " refers to the unsaturated monocycle of saturation or part or polycyclic cyclic hydrocarbon substituent, cycloalkyl ring include 3 to
20 carbon atoms, preferably comprise 3 to 12 carbon atoms, more preferably include 3 to 6 carbon atoms.Monocyclic cycloalkyl it is non-limiting
Example includes cyclopropyl, cyclobutyl, cyclopenta, cyclopentenyl, cyclohexyl, cyclohexenyl group, cyclohexadienyl, suberyl, cycloheptyl
Trialkenyl, cyclooctyl etc.;Polycyclic naphthene base includes the naphthenic base of loop coil, condensed ring and bridged ring.
Term " heterocycle " refers to the unsaturated monocycle of saturation or part or polycyclic cyclic hydrocarbon substituent, and it includes 3 to 20 rings
Atom, wherein one or more annular atoms are the hetero atom selected from nitrogen, oxygen or S (O) m (wherein m is integer 0 to 2), but are not wrapped
The loop section of-O-O- ,-O-S- or-S-S- are included, remaining annular atom is carbon.3 to 12 annular atoms are preferably comprised, wherein 1~4
It is hetero atom;It more preferably include 3 to 6 annular atoms.The non-limiting example of monocyclic heterocycles base includes pyrrolidinyl, imidazolidine
Base, tetrahydrofuran base, tetrahydro-thienyl, glyoxalidine base, dihydrofuryl, pyrazoline base, pyrrolin base, piperidyl,
Piperazinyl, morpholinyl, thio-morpholinyl, high piperazine base etc., preferably piperidyl, pyrrolidinyl.Multiring heterocyclic includes loop coil, thick
The heterocycle of ring and bridged ring.
Term " aryl " refers to that 6 to 14 yuan of full carbon monocycles of the pi-electron system with conjugation or fused polycycle are (namely shared
The ring of adjacent carbon atoms pair) group, preferably 6 to 10 yuan, such as phenyl and naphthalene.
Aryl can be substituted or non-substituted, and when substituted, substituent group is preferably one or more following groups,
It is independently selected from alkyl, alkenyl, alkynyl, alkoxy, alkylthio group, alkyl amino, halogen, sulfydryl, hydroxyl, nitro, cyano, ring
Alkyl, Heterocyclylalkyl, aryl, heteroaryl, cycloalkyloxy, heterocyclylalkoxy groups, cycloalkylthio, heterocycle alkylthio group, carboxyl or carboxylic acid
Ester group, preferably phenyl.
Term " heteroaryl " refers to the heteroaromatic system comprising 1 to 4 hetero atom, 5 to 14 annular atoms, and wherein hetero atom selects
From oxygen, sulphur and nitrogen.Heteroaryl is preferably 5 to 12 yuan, such as imidazole radicals, furyl, thienyl, thiazolyl, pyrazolyl, oxazole
Base, pyrrole radicals, tetrazole radical, pyridyl group, pyrimidine radicals, thiadiazoles, pyrazinyl etc., preferably imidazole radicals, pyrazolyl, pyrimidine radicals or thiophene
Oxazolyl;More preferably pyrazolyl or thiazolyl.
Heteroaryl can be it is optionally replacing or non-substituted, when substituted, substituent group be preferably it is one or more with
Lower group, independently selected from alkyl, alkenyl, alkynyl, alkoxy, alkylthio group, alkyl amino, halogen, sulfydryl, hydroxyl, nitro,
Cyano, naphthenic base, Heterocyclylalkyl, aryl, heteroaryl, cycloalkyloxy, heterocyclylalkoxy groups, cycloalkylthio, heterocycle alkylthio group, carboxyl
Or carboxylate.
Term " alkoxy " refers to-O- (alkyl) and-O- (non-substituted naphthenic base), and wherein alkyl is as defined above.
The non-limiting example of alkoxy includes: methoxyl group, ethyoxyl, propoxyl group, butoxy, cyclopropyl oxygroup, cyclobutoxy group, penta oxygen of ring
Base, cyclohexyloxy.Alkoxy can be optionally replacing or non-substituted, and when substituted, substituent group is preferably one or more
A following group, independently selected from alkyl, alkenyl, alkynyl, alkoxy, alkylthio group, alkyl amino, halogen, sulfydryl, hydroxyl,
Nitro, cyano, naphthenic base, Heterocyclylalkyl, aryl, heteroaryl, cycloalkyloxy, heterocyclylalkoxy groups, cycloalkylthio, heterocycle alkane sulphur
Base, carboxyl or carboxylate.
Term " hydroxyalkyl " refers to the alkyl being optionally substituted by a hydroxyl group, and wherein alkyl is as defined above.
Term " halogenated alkyl " refers to the alkyl being optionally substituted by halogen, and wherein alkyl is as defined above.
Term " hydroxyl " refers to-OH group.
Term " halogen " refers to fluorine, chlorine, bromine or iodine.
Term " amino " refers to-NH2。
Term " cyano " refers to-CN.
Term " nitro " refers to-NO2。
" optional " or " optionally " mean event or environment described later can with but need not occur, which includes
The occasion that the event or environment occur or do not occur.For example, meaning that alkyl can be with " optionally by alkyl-substituted heterocyclic group "
But necessarily exist, the explanation include heterocyclic group by alkyl-substituted situation and heterocyclic group not by alkyl-substituted situation.
" substituted " refers to one or more hydrogen atoms in group, preferably at most 5, more preferably 1~3 hydrogen atom
Replaced independently of one another by the substituent group of respective number.Self-evident, substituent group is only in their possible chemical position, this
Field technical staff, which can determine in the case where not paying excessive make great efforts and (pass through experiment or theoretical), may or impossible take
Generation.It may be unstable when for example, amino or hydroxyl with free hydrogen are in conjunction with the carbon atom with unsaturated (such as olefinic) key
Fixed.
Agents useful for same or solvent of the present invention may be from commercial sources, or be prepared according to literature method.
The structure of compound is by nuclear magnetic resonance (NMR) or/and mass spectrum (MS) come what is determined.NMR is displaced (δ) with 10-6
(ppm) unit provides.The measurement of NMR is to use Bruker AVANCE-400 nuclear magnetic resonance spectrometer, and measurement solvent is deuterated dimethyl sulfoxide
(DMSO-d6), deuterated chloroform (CDCl3), deuterated methanol (CD3OD), inside it is designated as tetramethylsilane (TMS);The measurement of MS is used
FINNIGAN LCQAd (ESI) mass spectrograph (manufacturer: Thermo, model: Finnigan LCQ advantage MAX).
Column chromatography is generally carrier or 100-200 mesh acidity or alkaline oxygen using 200~300 mesh silica gel of Yantai Huanghai Sea silica gel
Change aluminium.