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KMID : 1059519970410020088
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Journal of the Korean Chemical Society
1997 Volume.41 No. 2 p.88 ~ p.97
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Preparation and Polymerization of Alkenylsilanes
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Kim Chung-Kyun
Choi Soon-Kyu
Park Eun-Mi
Jung In-Kyung
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Abstract
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The silyltriflates Ph3-nSiH(OTf)n have been produced by the reaction of triphenylsilane and triflic acid (CF3SO3H) at low temperature. These highly reactive compounds are a valuable reagent for the synthesis of numerous new functional substituted silane derivatives. The reaction of silyltriflates with alkenyl- and alkynylmagnesium bromide as well as organolithium compounds gave new silanes Ph2SiHR(R=C(CPh, CH=CH2, CH2CH=CH2, (CH2)2CH=CH2, (CH2)3CH=CH2) in high yields. The hydrosilation of prepared alkenyl- and alkynylsilanes Ph2SiHR in the presence of a platinum catalyst(Pt/C) at high temperature(200℃) gave carbosilane polymers((Ph2SiCH=CPh)n and (Ph2Si(CH2)m)n; m=2∼4, n≥10) along with five- and six-membered silaalkane ring compounds derived from intramolecular hydrosilation reactions. All of the prepared compounds are confirmed by NMR, UV, IR and mass spectroscopy as well as elemental analysis.
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