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高等学校化学研究 ›› 1988, Vol. 4 ›› Issue (2): 61-66.

• Articles • 上一篇    下一篇

Studies on the Hydrosilation of Aromatic Aldehydes

Geng Bolin1, Xu Shansheng1, Huang Changhua1, Zhou Xiuzhong1, Wang yongtai2, Lin Chui2   

  1. 1. Department of Chemistry, Nankai University, Tianjin;

    2. Central Laboratory, Nankai University, Tianjin
  • 收稿日期:1987-07-05 出版日期:1988-04-24 发布日期:2011-09-09

Studies on the Hydrosilation of Aromatic Aldehydes

Geng Bolin1, Xu Shansheng1, Huang Changhua1, Zhou Xiuzhong1, Wang yongtai2, Lin Chui2   

  1. 1. Department of Chemistry, Nankai University, Tianjin;

    2. Central Laboratory, Nankai University, Tianjin
  • Received:1987-07-05 Online:1988-04-24 Published:2011-09-09

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摘要： The dependence of reactivity on molecular structure in hydro-silation of aromatic aldehydes catalyzed by (PPh3)3 RhCl was studied by "IN SITU" FT-IR technique and a plausible mechanism was proposed.The results show that: (1) Model reaction Ⅰ, Ⅱ and Ⅲ are all characterized by an induction period; (2) The reaction constant of model reaction Ⅰ is +1.57, so the rare of reaction Ⅰ is increased by the electron-withdrawing groups; (3) The rate of model reaction Ⅲ decreases when the size of R1 becomes larger; (4) The reaction constant of model reaction Ⅲ is -0. 50, so the rate of it is increased by electron-donating groups.

关键词: IN SITU FT-IR, Homogeneous catalysis, Hydrosilation, Reactivity and structure

Abstract: The dependence of reactivity on molecular structure in hydro-silation of aromatic aldehydes catalyzed by (PPh3)3 RhCl was studied by "IN SITU" FT-IR technique and a plausible mechanism was proposed.The results show that: (1) Model reaction Ⅰ, Ⅱ and Ⅲ are all characterized by an induction period; (2) The reaction constant of model reaction Ⅰ is +1.57, so the rare of reaction Ⅰ is increased by the electron-withdrawing groups; (3) The rate of model reaction Ⅲ decreases when the size of R1 becomes larger; (4) The reaction constant of model reaction Ⅲ is -0. 50, so the rate of it is increased by electron-donating groups.

Key words: IN SITU FT-IR, Homogeneous catalysis, Hydrosilation, Reactivity and structure