Studies on Homogeneous Catalytic Hydrosilation of Cycloalkanonc

Chem. J. Chinese Universities ›› 1991, Vol. 12 ›› Issue (1): 53.

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Studies on Homogeneous Catalytic Hydrosilation of Cycloalkanonc

Sun Jing, Zhou Xiu-zhong

Department of Chemistry, Nankai University, Tianjin, 300072

Received:1990-08-12 Online:1991-01-24 Published:1991-01-24

Abstract

Abstract: The dependence of reactivity on ring size in hydrosilation of cycloalkanone with cyclosiliconhydrides catalyzed by (Ph₃P)₃RhCl was studied by "in situ" FTIR technique.The results show that: 1. The rate constants of model reaction Ⅰ are arranged in decreasing order: k₆>k₅>k₇; 2. The rate constants of model reaction Ⅱ are arranged in decreasing order: k₅>k₆. The migratory-insertion of silyl group to carbonyl group was proposed as the rate-determining step.

Key words: Hydrosilation, FT-IR technique, Homogeneous catalysis

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Sun Jing, Zhou Xiu-zhong . Studies on Homogeneous Catalytic Hydrosilation of Cycloalkanonc[J]. Chem. J. Chinese Universities, 1991, 12(1): 53.

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Studies on Homogeneous Catalytic Hydrosilation of Cycloalkanonc

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