有机化学 ›› 1992, Vol. 12 ›› Issue (1): 91-95. 上一篇    下一篇

研究论文

乙酸烯丙酯的氢硅化反应

陈黎;徐善生;李欣;周秀中   

  1. 南开大学化学系
  • 发布日期:1992-02-25

Studies on the hydrosilation of allyl acetate

CHEN LI;XU SHANSHENG;LI XIN;ZHOU XIUZHONG   

  • Published:1992-02-25

本文在对芳醛及环酮的氢硅化反应研究基础上, 进一步研究乙酸烯丙酯的氢硅化反应。(Ph~3P)~3RhCl作催化剂, 反应可在均相进行。采用假一级动力学方法, 以气相色谱法鉴测氢硅化产物生成的速率, 求得其反应速度常数, 进而分析其反应活性与反应物结构的关系, 并提出相应的可能机理。

关键词: 气相色谱, 乙酸烯丙酯, 反应动力学, 铑络合物, 质子磁共振谱法, 三苯基膦, 氢硅化

The dependence of reactivity on mol. structure in the hydrosilation of allyl acetate catalyzed by (Ph3P)3RhCl was studied by kinetics. The results showed that: a) the reaction constant of model reaction I, in which AcOCH2CH:CH2 was hydrosilylated with I (R = Ph, p-tolyl, p-anisyl, p-ClC6H4, p-FC6H4), is 3.26 and the rate is increased by electron-withdrawing groups, b) the rate of model reaction II, in which AcOCH2CH:CH2 was hydrosilylated with I (R = Me, Et, Me2CH, Me3C), is decreased when the size of R becomes larger.

Key words: REACTION KINETICS, GAS CHROMATOGRAPHY, ALLYL ACETATE, PROTON MAGNETIC RESONANCE SPECTROMETRY, RHODIUM COMPLEX, TRIPHENYLPHOSPHINE

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