JP2021017427A - Bishaloalkylsiloxane compound and method of producing the same, and method of producing siloxane compound with both terminals functionalized - Google Patents

Bishaloalkylsiloxane compound and method of producing the same, and method of producing siloxane compound with both terminals functionalized Download PDF

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JP2021017427A
JP2021017427A JP2019135388A JP2019135388A JP2021017427A JP 2021017427 A JP2021017427 A JP 2021017427A JP 2019135388 A JP2019135388 A JP 2019135388A JP 2019135388 A JP2019135388 A JP 2019135388A JP 2021017427 A JP2021017427 A JP 2021017427A
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bishaloalkylsiloxane
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JP7350253B2 (en
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明彦 白幡
Akihiko Shirahata
明彦 白幡
広之 内田
Hiroyuki Uchida
広之 内田
善也 藤野
Yoshinari Fujino
善也 藤野
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Keiso Zairyo Kaihatsu Co Ltd
NAGASE KEMUSUPEKKU KK
Nagase and Co Ltd
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NAGASE KEMUSUPEKKU KK
Nagase and Co Ltd
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Abstract

To provide a novel bisalkylsiloxane compound useful as an intermediate for synthesizing a siloxane compound with both terminals functionalized, and a method of producing the same.SOLUTION: The present invention provides a bishaloalkylsiloxane compound represented by the formula (1) [where X is a halogen atom, R1 is a C3-7 alkylene group, R2 is a C1-3 alkyl group, or a phenyl group, a plurality of R2 in the same molecule may be the same or different, n is an integer of 0-200].SELECTED DRAWING: None

Description

本発明は、ビスハロアルキルシロキサン化合物及びその製造方法に関する。本発明はまた、ビスハロアルキルシロキサン化合物を用いて両末端官能性のシロキサン化合物を製造する方法に関する。 The present invention relates to a bishaloalkylsiloxane compound and a method for producing the same. The present invention also relates to a method for producing a bilaterally functional siloxane compound using a bishaloalkylsiloxane compound.

ケイ素原子に結合したハロアルキル基を有する有機ケイ素化合物は、有機反応によってハロゲノ基を各種の官能基を有する置換基で置換することにより、種々の官能性有機ケイ素化合物を得るための中間体として有用である。例えば、非特許文献1は、アリルクロリドとジメチル水素クロロシランとのヒドロシリル化反応により生成したクロロプロピルジメチルクロロシラン(ClMeSiCHCHCHCl)を単離し、これを加水分解する方法により、クロロプロピル基を有するジシロキサン化合物を製造したことを報告している。 Organosilicon compounds having a haloalkyl group bonded to a silicon atom are useful as intermediates for obtaining various functional organosilicon compounds by substituting a halogeno group with a substituent having various functional groups by an organic reaction. is there. For example, Non-Patent Document 1 describes chloro by a method of isolating chloropropyldimethylchlorosilane (ClMe 2 SiCH 2 CH 2 CH 2 Cl) produced by a hydrosilylation reaction of allyl chloride and dimethylhydrochlorosilane and hydrolyzing it. It has been reported that a disiloxane compound having a propyl group was produced.

J.W.Ryan, G.K.Menzie, J.L.Speier, The Journal of American ChemicalSociety 82, 3601 (1960).J.W.Ryan, G.K.Menzie, J.L.Speier, The Journal of American ChemicalSociety 82, 3601 (1960).

本発明の一側面は、両末端官能性のシロキサン化合物を合成するための中間体等として有用な、新規なビスアルキルシロキサン化合物、及びその製造方法を提供する。 One aspect of the present invention provides a novel bisalkylsiloxane compound, which is useful as an intermediate for synthesizing a siloxane compound having both terminal functionality, and a method for producing the same.

本発明の一側面は、下記式(1)で表される、ビスハロアルキルシロキサン化合物に関する。 One aspect of the present invention relates to a bishaloalkylsiloxane compound represented by the following formula (1).

式(1)中、Xはハロゲン原子を示し、Rは炭素数3〜7のアルキレン基を示し、Rは炭素数1〜3のアルキル基、又はフェニル基を示し、同一分子中の複数のRは同一でも異なっていてもよく、nは0〜200の整数を示す。 In the formula (1), X represents a halogen atom, R 1 represents an alkylene group having 3 to 7 carbon atoms, R 2 represents an alkyl group having 1 to 3 carbon atoms, or a phenyl group, and a plurality of groups in the same molecule. R 2 may be the same or different, and n represents an integer from 0 to 200.

本発明の別の一側面は、上記ビスハロアルキルシロキサン化合物を製造する方法に関する。本発明の一側面に係る方法は、下記式(2)で表されるハロオレフィン化合物と下記式(3)で表されるシロキサン化合物とのヒドロシリル化反応によって、式(1)で表されるビスハロアルキルシロキサン化合物を生成させる工程を含む。 Another aspect of the present invention relates to a method for producing the bishaloalkylsiloxane compound. The method according to one aspect of the present invention is a bis represented by the formula (1) by a hydrosilylation reaction between a haloolefin compound represented by the following formula (2) and a siloxane compound represented by the following formula (3). The step of producing a haloalkylsiloxane compound is included.

本発明の更に別の一側面は、上記ビスアルキルシロキサン化合物のハロゲン原子を、官能基を含む置換基に置換する工程を含む、両末端官能性のシロキサン化合物を製造する方法に関する。 Yet another aspect of the present invention relates to a method for producing a siloxane compound having both terminal functionality, which comprises a step of substituting a halogen atom of the bisalkylsiloxane compound with a substituent containing a functional group.

本発明の一側面に係るビスハロアルキルシロキサン化合物は、両末端官能性のシロキサン化合物を合成するための中間体等として有用である。本発明の一側面に係る製造方法によれば、ビスハロアルキルシロキサン化合物を、比較的温和な反応条件で、副生物が少なく高い収率で得ることができる。 The bishaloalkylsiloxane compound according to one aspect of the present invention is useful as an intermediate or the like for synthesizing a siloxane compound having both terminal functionality. According to the production method according to one aspect of the present invention, the bishaloalkylsiloxane compound can be obtained in a high yield with few by-products under relatively mild reaction conditions.

実施例で合成した1,3−ビスクロロオクチル−1,1,3,3−テトラメチルジシロキサンのFT−IRスペクトルである。It is an FT-IR spectrum of 1,3-bischlorooctyl-1,1,3,3-tetramethyldisiloxane synthesized in Examples. 1,1,3,3−テトラメチルジシロキサンのFT−IRスペクトルである。It is an FT-IR spectrum of 1,1,3,3-tetramethyldisiloxane. 1−クロロオクト−7−エンのFT−IRスペクトルである。It is an FT-IR spectrum of 1-chlorooct-7-ene. 1,3−ビスクロロオクチル−1,1,3,3−テトラメチルジシロキサンのH NMRスペクトルである。It is a 1 H NMR spectrum of 1,3-bis-chloro-octyl-1,1,3,3-tetramethyldisiloxane. 実施例で合成した両末端にクロロオクチル基を有するジメチルポリシロキサンのFT−IRスペクトルである。It is an FT-IR spectrum of the dimethylpolysiloxane having a chlorooctyl group at both ends synthesized in the example.

以下、本発明のいくつかの実施形態について詳細に説明する。ただし、本発明は以下の実施形態に限定されるものではない。 Hereinafter, some embodiments of the present invention will be described in detail. However, the present invention is not limited to the following embodiments.

ビスハロアルキルシロキサン化合物を製造する方法の一実施形態は、下記式(2)で表されるハロオレフィン化合物と下記式(3)で表されるシロキサン化合物とのヒドロシリル化反応によって、下記式(1)で表されるビスハロアルキルシロキサン化合物を生成させる工程を含む。 One embodiment of the method for producing a bishaloalkylsiloxane compound is a hydrosilylation reaction between a haloolefin compound represented by the following formula (2) and a siloxane compound represented by the following formula (3) to carry out the following formula (1). Including a step of producing a bishaloalkylsiloxane compound represented by.


式(1)、(2)及び(3)中、Xはハロゲン原子を示し、Rは炭素数3〜7のアルキレン基を示し、Rは炭素数1〜3のアルキル基、又はフェニル基を示し、同一分子中の複数のRは同一でも異なっていてもよい。nは0〜200の整数を示す。 In formulas (1), (2) and (3), X represents a halogen atom, R 1 represents an alkylene group having 3 to 7 carbon atoms, and R 2 represents an alkyl group having 1 to 3 carbon atoms or a phenyl group. are shown, multiple R 2 in the same molecule may be the same or different. n represents an integer from 0 to 200.

式(2)で表されるハロオレフィン化合物を用いたヒドロシリル化反応により、ビスハロアルキルシロキサン化合物を、副生物が少なく高い収率で生成させることができる。非特許文献1が報告したような、アリルクロリドのヒドロシリル化反応の場合、β−付加によって生成した化合物からクロロシランが脱離する副反応が生じ易い。更に、クロロシランはクロロシロキサンを副生物として生成させる。したがって、目的とするクロロプロピルジメチルクロロシランの収率は極めて低く、この反応は実用に耐えるものではなかった。これに対して、式(2)のハロオレフィン化合物の場合、末端のビニル基とハロゲン原子が結合した炭素原子との間に、炭素数3以上のアルキレン基Rが存在するため、β−付加の生成物からクロロシランが脱離することがなく、このことが収率向上に寄与すると考えられる。また、式(2)のハロオレフィン化合物は比較的高い沸点を有するため、高圧条件を必要とすることなく、常圧でヒドロシリル化反応が進行する温度まで加熱することができる。加えて、加水分解の工程を経ることなく、ヒドロシリル化反応だけでビスハロアルキルシロキサン化合物が生成する点でも、本実施形態に係る方法は優れている。 A bishaloalkylsiloxane compound can be produced in a high yield with few by-products by a hydrosilylation reaction using a haloolefin compound represented by the formula (2). In the case of the hydrosilylation reaction of allyl chloride as reported in Non-Patent Document 1, a side reaction in which chlorosilane is eliminated from the compound produced by β-addition is likely to occur. In addition, chlorosilane produces chlorosiloxane as a by-product. Therefore, the yield of the desired chloropropyldimethylchlorosilane was extremely low, and this reaction was not practical. In contrast, in the case of halo-olefin compound of formula (2), between the carbon atom to which the vinyl group and a halogen atom of the terminal is bonded, because of the presence of an alkylene group R 1 having 3 or more carbon atoms, beta-it added Chlorosilane is not desorbed from the product of, which is considered to contribute to the improvement of yield. Further, since the haloolefin compound of the formula (2) has a relatively high boiling point, it can be heated to a temperature at which the hydrosilylation reaction proceeds at normal pressure without requiring high pressure conditions. In addition, the method according to the present embodiment is excellent in that a bishaloalkylsiloxane compound is produced only by a hydrosilylation reaction without going through a hydrolysis step.

式(1)中のXは、塩素原子又は臭素原子であってもよく、特に塩素原子であってもよい。Rは直鎖状、分岐状、環状、又はこれらの組み合わせを含むアルキレン基であってもよく、直鎖アルキレン基であってもよい。Rが炭素数5の直鎖アルキレン基であってもよい。式(1)のハロオレフィン化合物の具体例としては、1−クロロオクト−7−エンが挙げられる。 X in the formula (1) may be a chlorine atom or a bromine atom, and may be a chlorine atom in particular. R 1 may be an alkylene group containing a linear, branched, cyclic, or a combination thereof, or may be a linear alkylene group. R 1 may be a linear alkylene group having 5 carbon atoms. Specific examples of the haloolefin compound of the formula (1) include 1-chlorooct-7-ene.

式(2)中のRは、メチル基、エチル基、又はn−プロピル基であってもよく、メチル基であってもよい。nは0〜200の整数であり、0〜150又は0〜100の整数であってもよい。 R 2 in the formula (2) may be a methyl group, an ethyl group, an n-propyl group, or a methyl group. n is an integer from 0 to 200 and may be an integer from 0 to 150 or 0 to 100.

ヒドロシリル化反応は、触媒の存在下で行ってもよい。触媒はヒドロシリル化反応の触媒として通常用いられるものから選択できる。触媒の例としては、塩化白金酸、及びジビニルテトラメチルジシロキサンの白金錯体のような白金触媒が挙げられる。白金触媒は、イソプロパノール等の溶媒を含む溶液の状態で、反応液に添加されてもよい。 The hydrosilylation reaction may be carried out in the presence of a catalyst. The catalyst can be selected from those commonly used as catalysts for the hydrosilylation reaction. Examples of catalysts include platinum catalysts such as chloroplatinic acid and a platinum complex of divinyltetramethyldisiloxane. The platinum catalyst may be added to the reaction solution in the form of a solution containing a solvent such as isopropanol.

ヒドロシリル化反応は、無溶媒の反応液、又は溶媒を含む反応液中で行うことができる。反応温度(反応液の温度)及び反応時間は、ヒドロシリル化反応が充分に進行するように、調整される。例えば、反応温度は50℃〜180℃、又は80℃〜130℃であってもよい。反応時間は1〜3時間であってもよい。 The hydrosilylation reaction can be carried out in a solvent-free reaction solution or a reaction solution containing a solvent. The reaction temperature (temperature of the reaction solution) and the reaction time are adjusted so that the hydrosilylation reaction proceeds sufficiently. For example, the reaction temperature may be 50 ° C. to 180 ° C. or 80 ° C. to 130 ° C. The reaction time may be 1-3 hours.

ヒドロシリル化反応によって得られた式(1)のビスハロアルキルシロキサン化合物を、環状シロキサンオリゴマー(例えばオクタメチルシクロテトラシロキサン)と反応させることより、更に長いポリシロキサン鎖を有するビスハロアルキルシロキサン化合物を得ることもできる。 By reacting the bishaloalkylsiloxane compound of the formula (1) obtained by the hydrosilylation reaction with a cyclic siloxane oligomer (for example, octamethylcyclotetrasiloxane), a bishaloalkylsiloxane compound having a longer polysiloxane chain can be obtained. it can.

式(1)のビスハロアルキルシロキサン化合物を、両末端官能性の各種シロキサン化合物を製造するために用いてもよい。例えば、ビスアルキルシロキサン化合物のハロゲン原子を、官能基を含む置換基に置換する工程を含む方法により、両末端官能性のシロキサン化合物を製造することができる。 The bishaloalkylsiloxane compound of the formula (1) may be used to produce various siloxane compounds having both terminal functionality. For example, a siloxane compound having both terminal functionality can be produced by a method including a step of substituting a halogen atom of a bisalkylsiloxane compound with a substituent containing a functional group.

導入される官能基の例としては、アミノ基、アセトキシ基、(メタ)アクリロイルオキシ基が挙げられる。 Examples of functional groups to be introduced include amino groups, acetoxy groups and (meth) acryloyloxy groups.

導入される官能基自体がハロアルキル基と反応する場合、導入される官能基を有する化合物と式(2)のビスハロアルキルシロキサン化合物との反応によって、両末端官能性のシロキサン化合物を得ることができる。例えば、有機アミン化合物を用いることにより、アミノ基を導入することができる。あるいは、酢酸又は(メタ)アクリル酸のアルカリ金属塩を用いることにより、アセトキシ基又は(メタ)アクリロイルオキシ基を導入してもよい。導入される官能基とハロアルキル基と反応する反応基とを有する化合物を、式(2)のビスハロアルキルシロキサン化合物と反応させてもよい。反応条件は、当業者に理解されるように、通常の置換反応の範囲で、適宜調整される。 When the functional group to be introduced reacts with a haloalkyl group, a siloxane compound having both terminal functionality can be obtained by reacting the compound having the functional group to be introduced with the bishaloalkylsiloxane compound of the formula (2). For example, an amino group can be introduced by using an organic amine compound. Alternatively, an acetoxy group or a (meth) acryloyloxy group may be introduced by using an alkali metal salt of acetic acid or (meth) acrylic acid. A compound having a functional group to be introduced and a reactive group that reacts with a haloalkyl group may be reacted with a bishaloalkylsiloxane compound of the formula (2). The reaction conditions are appropriately adjusted within the range of the usual substitution reaction, as will be understood by those skilled in the art.

合成される両末端官能性のシロキサン化合物は、例えば下記式(5)で表される化合物であることができる。

式(5)中のZは、官能基を含む置換基である。Zは、例えば、アルキルアミノ基、アセトキシ基、又は(メタ)アクリロイルオキシ基であることができる。R、R及びnは式(1)〜(3)中のR、R及びnと同義である。
The both-terminal functional siloxane compound to be synthesized can be, for example, a compound represented by the following formula (5).

Z in the formula (5) is a substituent containing a functional group. Z can be, for example, an alkylamino group, an acetoxy group, or a (meth) acryloyloxy group. R 1, R 2 and n have the same meanings as R 1, R 2 and n in formula (1) to (3).

両末端官能性のシロキサン化合物は、例えば、UVコーティング剤等の塗料の成分として適用可能である。 The bi-terminal functional siloxane compound can be applied as a component of a coating material such as a UV coating agent.

以下、実施例を挙げて本発明についてさらに具体的に説明する。ただし、本発明はこれら実施例に限定されるものではない。 Hereinafter, the present invention will be described in more detail with reference to examples. However, the present invention is not limited to these examples.

(実施例1)
1,3−ビスクロロオクチル−1,1,3,3−テトラメチルジシロキサン(式(1)において、Xが塩素原子、Rが炭素数5のアルキレン基、Rがメチル基、nが0である化合物)の合成
還流管、滴下ロート、温度計を備えた500ミリリットルの三口丸底フラスコに、1−クロロオクト−7−エンを235g、ジビニルテトラメチルジシロキサン白金錯体のジビニルテトラメチルジシロキサン溶液(白金含有量:2%)を60mg入れた。フラスコ内の反応液を磁気攪拌子で撹拌しながら110℃まで加熱した。加熱を止め、1,1,3,3−テトラメチルジシロキサン67.2gを、110℃から120℃を維持しながら反応液にゆっくりと滴下した。滴下終了後、反応液の温度を120℃で1時間維持した。未反応の1−クロロオクト−7−エンを減圧下で留去し、次いで1,3−ビスクロロオクチル−1,1,3,3−テトラメチルジシロキサンを減圧蒸留で単離した。単離した生成物の沸点は0.07kPaの圧力下で178℃〜179℃であった。収量は197gで、収率は滴下した1,1,3,3−テトラメチルジシロキサンに対して92%であった。生成物のガスクロマトグラフィーによる純度は99%であった。図1は、単離された生成物のFT−IRスペクトルである。図2及び図3は、それぞれ、原料として用いられた1,1,3,3−テトラメチルジシロキサン及び1−クロロオクト−7−エンのFT−IRスペクトルである。1,1,3,3−テトラメチルジシロキサンで観測された2100cm−1付近のSi−Hの吸収、及び1−クロロオクト−7−エンで観測された1640cm−1付近のオレフィンの吸収が、生成物のFT−IRスペクトルにおいて消失しており、このことから目的とする1,3−ビスクロロオクチル−1,1,3,3−テトラメチルジシロキサンが生成していることが確認された。生成物の構造は、図4のH NMRスペクトル(CDCl,内部標準物質:テトラメチルシラン)、及び以下の元素分析の結果からも確認された。
元素分析値:C 56.2%(理論値:56.17%);H 10.4%(理論値:10.37%)
(Example 1)
1,3-bischlorooctyl-1,1,3,3-tetramethyldisiloxane (in formula (1), X is a chlorine atom, R 1 is an alkylene group having 5 carbon atoms, R 2 is a methyl group, and n is. Synthesis of compound (0) In a 500 ml three-necked round bottom flask equipped with a perfusion tube, a dropping funnel, and a thermometer, 235 g of 1-chlorooct-7-ene and divinyltetramethyldisiloxane of a divinyltetramethyldisiloxane platinum complex 60 mg of the solution (platinum content: 2%) was added. The reaction solution in the flask was heated to 110 ° C. while stirring with a magnetic stir bar. The heating was stopped, and 67.2 g of 1,1,3,3-tetramethyldisiloxane was slowly added dropwise to the reaction solution while maintaining 110 ° C to 120 ° C. After completion of the dropping, the temperature of the reaction solution was maintained at 120 ° C. for 1 hour. Unreacted 1-chlorooct-7-ene was distilled off under reduced pressure, and then 1,3-bischlorooctyl-1,1,3,3-tetramethyldisiloxane was isolated by vacuum distillation. The boiling point of the isolated product was 178 ° C to 179 ° C under a pressure of 0.07 kPa. The yield was 197 g, and the yield was 92% with respect to the dropped 1,1,3,3-tetramethyldisiloxane. The purity of the product by gas chromatography was 99%. FIG. 1 is an FT-IR spectrum of the isolated product. 2 and 3 are FT-IR spectra of 1,1,3,3-tetramethyldisiloxane and 1-chlorooct-7-ene used as raw materials, respectively. Absorption of Si-H near 2100 cm- 1 observed with 1,1,3,3-tetramethyldisiloxane and absorption of olefins near 1640 cm- 1 observed with 1-chlorooct-7-ene are produced. It disappeared in the FT-IR spectrum of the product, and it was confirmed from this that the desired 1,3-bischlorooctyl-1,1,3,3-tetramethyldisiloxane was produced. The structure of the product was also confirmed from the 1 H NMR spectrum of FIG. 4 (CDCl 3 , internal standard substance: tetramethylsilane) and the results of the following elemental analysis.
Elemental analysis value: C 56.2% (theoretical value: 56.17%); H 10.4% (theoretical value: 10.37%)

(実施例2)
両末端にクロロオクチル基を有するジメチルポリシロキサン(式(1)において、Xが塩素原子、Rが炭素数5のアルキレン基、Rがメチル基、nが平均で15である化合物)の合成
還流管、滴下ロート、撹拌棒、温度計を備えた2リットルの四口丸底フラスコに、両末端にジメチルヒドロシリル基を有するポリジメチルシロキサン(平均組成式:HMeSiO(MeSiO)15SiMeH)を1370g、ジビニルテトラメチルジシロキサン白金錯体のジビニルテトラメチルジシロキサン溶液(白金含有量:2%)を100mg入れた。フラスコ内の反応液を磁気攪拌子で攪拌しながら110℃まで加熱した。続いて反応液に対して1−クロロオクト−7−エン440gをゆっくりと滴下した。滴下終了後、110℃〜125℃の温度を維持しながら、反応液を1時間撹拌した。0.2kPaの減圧下、フラスコ内の温度145℃の条件で未反応の1−クロロオクト−7−エン、及び並行反応によって生成した環状ポリジメチルシロキサンを留去した。残渣のろ過により、1110gの生成物を得た。図5は、単離された生成物のFT−IRスペクトルである。1,1,3,3−テトラメチルジシロキサンで観測された2100cm−1付近のSi−Hの吸収、及び1−クロロオクト−7−エンで観測された1640cm−1付近のオレフィンの吸収が、生成物のFT−IRスペクトルにおいて消失しており、このことから目的物である両末端にクロロオクチル基を有するジメチルポリシロキサンが得られたことを確認した。
(Example 2)
Synthesis of dimethylpolysiloxane having chlorooctyl groups at both ends (in formula (1), X is a chlorine atom, R 1 is an alkylene group having 5 carbon atoms, R 2 is a methyl group, and n is an average of 15 compounds). Polydimethylsiloxane having dimethylhydrosilyl groups at both ends in a 2-liter four-necked round-bottomed flask equipped with a perfusion tube, dropping funnel, stirring rod, and thermometer (average composition formula: HMe 2 SiO (Me 2 SiO) 15 SiMe 2 H) and 1370 g, divinyltetramethyldisiloxane platinum complex of divinyltetramethyldisiloxane solution (platinum content: 2%) were placed 100 mg. The reaction solution in the flask was heated to 110 ° C. while stirring with a magnetic stir bar. Subsequently, 440 g of 1-chlorooct-7-ene was slowly added dropwise to the reaction solution. After completion of the dropping, the reaction solution was stirred for 1 hour while maintaining the temperature of 110 ° C. to 125 ° C. Under a reduced pressure of 0.2 kPa, unreacted 1-chlorooct-7-ene and cyclic polydimethylsiloxane produced by the parallel reaction were distilled off under the condition of a temperature of 145 ° C. in the flask. Filtration of the residue gave 1110 g of product. FIG. 5 is an FT-IR spectrum of the isolated product. Absorption of Si-H near 2100 cm- 1 observed with 1,1,3,3-tetramethyldisiloxane and absorption of olefins near 1640 cm- 1 observed with 1-chlorooct-7-ene are produced. It disappeared in the FT-IR spectrum of the product, and from this, it was confirmed that the desired dimethylpolysiloxane having chlorooctyl groups at both ends was obtained.

(実施例3)
両末端にクロロオクチル基を有するジメチルポリシロキサン(式(1)において、Xが塩素原子、Rが炭素数5のアルキレン基、Rがメチル基、nが平均で65である化合物)の合成
還流管、滴下ロート、撹拌棒、温度計を備えた500ミリリットルの四口丸底フラスコに、両末端にジメチルヒドロシリル基を有するポリジメチルシロキサン(平均組成式:HMeSiO(MeSiO)65SiMeH)を300g、ジビニルテトラメチルジシロキサン白金錯体のジビニルテトラメチルジシロキサン溶液(白金含有量:2%)を1−クロロオクト−7−エンに対して10ppmに相当する量を入れた。フラスコ内の反応液を磁気攪拌子で攪拌しながら110℃まで加熱した。続いて反応液に対して1−クロロオクト−7−エン33.3gをゆっくりと滴下した。滴下終了後、110℃〜125℃の温度を維持しながら、反応液を1時間撹拌した。0.2kPaの減圧下、フラスコ内の温度145℃の条件で未反応の1−クロロオクト−7−エン、及び並行反応によって生成した環状ポリジメチルシロキサンを留去した。残渣のろ過により、290.3gの生成物を得た。生成物のFT−IRによる実施例1、2と同様の分析から、目的物である両末端にクロロオクチル基を有するジメチルポリシロキサンが得られたことを確認した。
(Example 3)
Synthesis of dimethylpolysiloxane having chlorooctyl groups at both ends (in formula (1), X is a chlorine atom, R 1 is an alkylene group having 5 carbon atoms, R 2 is a methyl group, and n is an average of 65). Polydimethylsiloxane having dimethylhydrosilyl groups at both ends in a 500 ml four-necked round bottom flask equipped with a perfusion tube, a dropping funnel, a stirring rod, and a thermometer (average composition formula: HMe 2 SiO (Me 2 SiO) 65 SiMe 2 H) and 300 g, divinyltetramethyldisiloxane siloxane platinum complex divinyltetramethyldisiloxane solution (platinum content: put an amount corresponding to 10ppm with respect to 2%) of 1-Kurorookuto-7-ene. The reaction solution in the flask was heated to 110 ° C. while stirring with a magnetic stir bar. Subsequently, 33.3 g of 1-chlorooct-7-ene was slowly added dropwise to the reaction solution. After completion of the dropping, the reaction solution was stirred for 1 hour while maintaining the temperature of 110 ° C. to 125 ° C. Under a reduced pressure of 0.2 kPa, unreacted 1-chlorooct-7-ene and cyclic polydimethylsiloxane produced by the parallel reaction were distilled off under the condition of a temperature of 145 ° C. in the flask. Filtration of the residue gave 290.3 g of product. From the same analysis as in Examples 1 and 2 by FT-IR of the product, it was confirmed that the desired dimethylpolysiloxane having chlorooctyl groups at both ends was obtained.

(実施例4)
両末端にクロロオクチル基を有するジメチルポリシロキサン(式(1)において、Xが塩素原子、Rが炭素数5のアルキレン基、Rがメチル基、nが平均で100である化合物)の合成
還流管、滴下ロート、撹拌棒、温度計を備えた500ミリリットルの四口丸底フラスコに、両末端にジメチルヒドロシリル基を有するポリジメチルシロキサン(平均組成式:HMeSiO(MeSiO)100SiMeH)を300g、ジビニルテトラメチルジシロキサン白金錯体のジビニルテトラメチルジシロキサン溶液(白金含有量:2%)を1−クロロオクト−7−エンに対して10ppmに相当する量を入れた。フラスコ内の反応液を磁気攪拌子で攪拌しながら110℃まで加熱した。続いて反応液に対して1−クロロオクト−7−エン21.9gをゆっくりと滴下した。滴下終了後、110℃〜125℃の温度を維持しながら、反応液を1時間撹拌した。1mmHgの減圧下、フラスコ内の温度150℃の条件で未反応の1−クロロオクト−7−エン、及び並行反応によって生成した環状ポリジメチルシロキサンを留去した。残渣のろ過により、266.3gの生成物を得た。生成物のFT−IRによる実施例1、2と同様の分析から、目的物である両末端にクロロオクチル基を有するジメチルポリシロキサンが得られたことを確認した。
(Example 4)
Synthesis of dimethylpolysiloxane having chlorooctyl groups at both ends (in formula (1), X is a chlorine atom, R 1 is an alkylene group having 5 carbon atoms, R 2 is a methyl group, and n is an average of 100). Polydimethylsiloxane having dimethylhydrosilyl groups at both ends in a 500 ml four-necked round bottom flask equipped with a reflux tube, a dropping funnel, a stirring rod, and a thermometer (average composition formula: HMe 2 SiO (Me 2 SiO) 100 SiMe 2 H) and 300 g, divinyltetramethyldisiloxane siloxane platinum complex divinyltetramethyldisiloxane solution (platinum content: put an amount corresponding to 10ppm with respect to 2%) of 1-Kurorookuto-7-ene. The reaction solution in the flask was heated to 110 ° C. while stirring with a magnetic stir bar. Subsequently, 21.9 g of 1-chlorooct-7-ene was slowly added dropwise to the reaction solution. After completion of the dropping, the reaction solution was stirred for 1 hour while maintaining the temperature of 110 ° C. to 125 ° C. Under a reduced pressure of 1 mmHg, unreacted 1-chlorooct-7-ene and cyclic polydimethylsiloxane produced by the parallel reaction were distilled off under the condition of a temperature of 150 ° C. in the flask. Filtration of the residue gave 266.3 g of product. From the same analysis as in Examples 1 and 2 by FT-IR of the product, it was confirmed that the desired dimethylpolysiloxane having chlorooctyl groups at both ends was obtained.

Claims (3)

下記式(1)で表される、ビスハロアルキルシロキサン化合物。

[式中、Xはハロゲン原子を示し、Rは炭素数3〜7のアルキレン基を示し、Rは炭素数1〜3のアルキル基、又はフェニル基を示し、同一分子中の複数のRは同一でも異なっていてもよく、nは0〜200の整数を示す。]
A bishaloalkylsiloxane compound represented by the following formula (1).

[In the formula, X represents a halogen atom, R 1 represents an alkylene group having 3 to 7 carbon atoms, R 2 represents an alkyl group or a phenyl group having 1 to 3 carbon atoms, and a plurality of Rs in the same molecule. 2 may be the same or different, and n represents an integer from 0 to 200. ]
下記式(2)で表されるハロオレフィン化合物と下記式(3)で表されるシロキサン化合物とのヒドロシリル化反応によって、下記式(1)で表されるビスハロアルキルシロキサン化合物を生成させる工程を含む、ビスハロアルキルシロキサン化合物を製造する方法。


[式中、Xはハロゲン原子を示し、Rは炭素数3〜7のアルキレン基を示し、Rは炭素数1〜3のアルキル基、又はフェニル基を示し、同一分子中の複数のRは同一でも異なっていてもよく、nは0〜200の整数を示す。]
It includes a step of producing a bishaloalkylsiloxane compound represented by the following formula (1) by a hydrosilylation reaction between a haloolefin compound represented by the following formula (2) and a siloxane compound represented by the following formula (3). , A method for producing a bishaloalkylsiloxane compound.


[In the formula, X represents a halogen atom, R 1 represents an alkylene group having 3 to 7 carbon atoms, R 2 represents an alkyl group or a phenyl group having 1 to 3 carbon atoms, and a plurality of Rs in the same molecule. 2 may be the same or different, and n represents an integer from 0 to 200. ]
請求項1に記載のビスロアルキルシロキサン化合物のハロゲン原子を、官能基を含む置換基に置換する工程を含む、両末端官能性のシロキサン化合物を製造する方法。 A method for producing a siloxane compound having both terminal functionality, which comprises a step of substituting the halogen atom of the bisloalkylsiloxane compound according to claim 1 with a substituent containing a functional group.
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