Promoting Effect of Lewis Acid on the Olefin Hydroesterification Catalyzed by Triphenylphosphine-Palladium Complex

被引：22

作者：

Yang, Jing ^{[1
]}

Yuan, Youzhu ^{[1
]}

机构：

[1] Xiamen Univ, Dept Chem,Coll Chem & Chem Engn, State Key Lab Phys Chem Solid Surfaces, Natl Engn Lab Green Chem Prod Alcohols Ethers Est, Xiamen 361005, Peoples R China

来源：

CATALYSIS LETTERS | 2009年 / 131卷 / 3-4期

关键词：

Hydroesterification; PPh3-Pd complex; Lewis acid; Promoter; CARBON-MONOXIDE; METHOXYCARBONYLATION; ALKENES; CARBONYLATION; INSERTION; STYRENE;

D O I：

10.1007/s10562-009-0007-y

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A number of Lewis acids obtained by a reaction of metal oxides with Bronsted acids such as para-toluenesulfonic acid (p-TsOH) and methanesulfonic acid (CH3SO3H) have been employed as promoter for styrene hydroesterification catalyzed by triphenylphosphine-palladium (PPh3-Pd) complex. The acidities of the Lewis acids were analyzed by potentiometric titration and the PPh3 consumption during the hydroesterification was characterized by P-31 NMR. The results indicated that the use of Lewis acid with apparent pH similar to p-TsOH can bring about a marked enhancement in the reaction rate and a significant depression in the PPh3 consumption. Such kind of Lewis acids may be more suitable as promoter for the olefin hydroesterification than the conventional Bronsted acids.

引用

页码：643 / 648

页数：6

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