申请人:Korea Institute of Science and Technology
公开号:US06251057B1
公开(公告)日:2001-06-26
The present invention relates to methods for making the compounds of formula I which is a dehydrohalogenative coupling of hydrochlorosilanes of formula II with organic halides of formula III in the presence of a Lewis base catalyst.
R3CH2SiR1Cl2 (I)
HSiR1Cl2 (II)
R2CH2X (III)
In formulas I and II, R1 represents a hydrogen, chloro, or methyl; in formula III, X represents a chloro or bromo; in formula III, R2 can be selected from the group consisting of a C1-17 alkyl, a C1-10 fluorinated alkyl with partial or full fluorination, a C1-5 alkenyl groups, a silyl group containing alkyls, (CH2)nSiMe3-mClm wherein n is 0 to 2 and m is 0 to 3, aromatic groups, Ar(R′)1 wherein Ar is C6-14 aromatic hydrocarbon, R′ is a C1-4 alkyl, halogen, alkoxy, or vinyl, and q is 0 to 5, a haloalkyl group, (CH2)pX wherein p is 1 to 9 and X is a chloro or bromo; or an aromatic hydrocarbon, Ar CH2X wherein Ar is C6-14 aromatic hydrocarbon and X is a chloro or bromo. in formula I, R3 is the same as R2 in formula III and further, R3 can also be (CH2)pSiR1Cl2 or ArCH2SiR1Cl2 when R2 in formula III is (CH2)pX or ArCH2X, because of the coupling reaction of X with the compound of formula II.
本发明涉及一种制备式I化合物的方法,该方法是在Lewis碱催化剂存在下,通过式II的氢氯硅烷与式III的有机卤化物的脱氢卤代偶联而得到的。
R3CH2SiR1Cl2 (I)
HSiR1Cl2 (II)
R2CH2X (III)
在式I和II中,R1代表氢、氯或甲基;在式III中,X代表氯或溴;在式III中,R2可以选择自C1-17烷基、C1-10氟化烷基(部分或完全氟化)、C1-5烯基、含有矽烷基的矽基团(CH2)nSiMe3-mClm,其中n为0至2,m为0至3,芳香族基团、Ar(R′)1,其中Ar为C6-14芳香烃烃基,R′为C1-4烷基、卤素、烷氧基或乙烯基,q为0至5,卤代烷基、(CH2)pX,其中p为1至9,X为氯或溴;或芳香烃基、Ar CH2X,其中Ar为C6-14芳香烃烃基,X为氯或溴。在式I中,R3与式III中的R2相同,此外,R3也可以是(CH2)pSiR1Cl2或ArCH2SiR1Cl2,当式III中的R2为(CH2)pX或ArCH2X时,因为X与式II化合物的偶联反应。