The reductive dimerization or polymerization of organochlorosilanes has been achieved by using the low-valent titanium reducing agent other than the alkali metals that are invariable used in the Wurtz-type coupling reaction. Applying this method, the corresponding disilanes or poly(methylvinylsilane) was obtained in good yields. The poly(methylvinylsilane) synthesized by this method is highly pure
有机氯硅烷的还原二聚反应或聚合反应是通过使用除了在Wurtz型偶联反应中始终使用的碱金属以外的低价钛还原剂来实现的。应用该方法,以良好的产率获得了相应的乙硅烷或聚(甲基乙烯基硅烷)。通过这种方法合成的聚(甲基乙烯基硅烷)是高纯度的,具有高分子量和窄分子量分布(M w / M n = 1.6,M n = 16,860)。
Conversion of arylsilanes, arylchlorosilanes, and siloxanes into chlorosilanes
作者:Sheila Mawaziny
DOI:10.1039/j19700001641
日期:——
Thirteen chlorosilanes have been prepared by the reaction between phosphorus pentachloride and the corresponding silanes. Yields were between 78·1 and 96·4%. Silicon atoms bearing chlorine or oxygen atoms were less reactive than other silanes. Phenyldichlorosilane failed to react.
Conversion of hydrosilanes to alkoxysilanes catalyzed by Cp2TiCl2/nBuLi
作者:Thomas C. Bedard、Joyce Y. Corey
DOI:10.1016/0022-328x(92)83095-y
日期:1992.5
disiloxanes and trisiloxanes in addition to cyclopolysilanes are produced when R Me. Other protic reagents including acids, mercaptans, amines and enolizable ketones did not react. The effects of reaction parameters such as temperature, silane to catalyst ratio, solvent, transition metal and replacements for nBuLi were also determined.
Cp<sub>2</sub>TiPh<sub>2</sub>-Catalyzed Dehydrogenative Coupling of Polyhydromonosilanes
作者:Taichi Nakano、Hidehisa Nakamura、Yoichiro Nagai
DOI:10.1246/cl.1989.83
日期:1989.1
The Cp2TiPh2-catalyzed reaction of dihydrosilanes afforded dehydrogenative coupling products, disilanes and/or trisilanes. The reaction using phenylsilane produced hydride-terminated poly(phenylsilylene) polymers with = 730 and = 960, which exhibited the longest UV absorption maximum at 245 nm(ε, 5.7 × 104).
Reactions of symmetrical and unsymmetrical disilanes in the presence of Cp2MCl2/nBuLi (M = Ti, Zr, Hf)
作者:J.Y. Corey、S.M. Rooney
DOI:10.1016/0022-328x(96)06298-5
日期:1996.8
The reactions of disilanes with catalytic quantities of Cp2MCl2/n BuLi (M = Ti, Zr) and cis-cyclooctene in a disilane/cyclooctene/metal ratio of approximately 30: ≥ 30: 1 exhibited rapid formation of monosilanes and trisilanes. The product distributions produced from H(PhMeSi)2H, H(BuMeSi)2H (symmetrical disilanes) and from HPh2SiSiPhMeH, HPhMeSiSiMe2H, HPhMeSiSiPrMeH and HPh2SiSiPhH2 (unsymmetrical
催化量为Cp 2 MCl 2 / n BuLi(M = Ti,Zr)和顺式环辛烯的乙硅烷/环辛烯/金属比为30:≥30:1的乙硅烷的反应显示出甲硅烷和丙硅烷的快速形成。从H(PhMeSi)中产生的产物分布2 H,H(BuMeSi)2 H(对称二硅烷),并从HPH 2 SiSiPhMeH,HPhMeSiSiMe 2 H,HPhMeSiSiPrMeH和HPH 2 SiSiPhH 2(不对称二硅烷)通过GCMS在所有情况下确定,并且HPh 2 SiSiPhMeH和HPhMeSiSiMeMe 2中的三硅烷分离出H,并进行光谱表征。Ph 4 Me 2 Si 3 H 2和Ph 5 MeSi 3 H 2(由HPh 2 SiSiPhMeH形成)和PhMe 5 Si 3 H 2和Ph 2 Me 4 Si 3 H 2(由HPhMeSiSiMe 2形成)的主要和次要异构体H)被确定。对这些反应中产物分布的分析表