高等学校化学学报 ›› 1997, Vol. 18 ›› Issue (11): 1866.

• 研究快报 • 上一篇    下一篇

PdCl2-NiCl2-PPh3/PVP催化苯乙烯高区域选择性的氢酯化反应

万伯顺, 廖世健, 徐筠, 余道容   

  1. 中国科学院大连化学物理研究所, 大连 116023
  • 收稿日期:1997-07-11 出版日期:1997-11-24 发布日期:1997-11-24
  • 通讯作者: 廖世健
  • 作者简介:万伯顺, 男, 34岁, 博士研究生.
  • 基金资助:

    国家自然科学基金!29473136;中国科学院上海有机化学研究所金属有机开放实验室资助

Regioselective Hydroesterification of Styrene Catalyzed by PdCl2-NiCl2-PPh3/PVP

WAN Bo-Shun, LIAO Shi-Jian, XU Yun, YU Dao-Rong   

  1. Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023
  • Received:1997-07-11 Online:1997-11-24 Published:1997-11-24

关键词: PdCl2-NiCl2-PPh3/PVP双金属催化剂, 氢酯化反应, 区域选择性, 苯乙烯

Abstract: Polymer-supported bimetallic system of PdCl2-4NiCl2-PPH3/PVP [PVP= poly(N-vinyl-2-pyrrolidone)] provided an almost regiospecific conversion of styrene to thebranched methyl 2-propionate at a high conversion.Typical reaction conditions are: 353 K,2.1 MPa of COpressure (gauge pressure), 10h; styrene (1 mmol); methanol (0.8 mL) ;benzene (10 mL); PdCl2/PVP(0.04 mmol Pd, N/Pd= 20 in molar ratio); n (Pd): n(Ni): n(PPh3) = 1: 4:1.Aremarkable synergic effect of bimetallic catalyst can be observed.Effects of PVP, amount of triphenylphosphine and temperature on the reaction were studied.The system of PdCl2-4NiCl2-PPh3/PVPgave 100% conversion of styrene and 99% selectivityto the branched chain ester under the typical reaction conditions.

Key words: PdCl2-NiCl2-PPh3/PVP bimetallic catalyst system, Hydroesterification, Regioselectivity, Styrene

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