Regioselective hydroesterification of 1-alkynes catalyzed by palladium-phosphine complexes

被引：27

作者：

Akao, M ^{[1
]}

Sugawara, S ^{[1
]}

Amino, K ^{[1
]}

Inoue, Y ^{[1
]}

机构：

[1] Tohoku Univ, Grad Sch Engn, Dept Chem Mat, Aoba Ku, Sendai, Miyagi 9808579, Japan

来源：

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 2000年 / 157卷 / 1-2期

关键词：

1-alkyne; hydroesterification; palladium complex;

D O I：

10.1016/S1381-1169(00)00053-4

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：

The reaction of 1-alkynes, CO, and methanol (hydroesterification) catalyzed by palladium-phosphine complexes has been studied in acetonitrile media. Branched alpha,beta-unsaturated ester was mainly produced in the presence of a catalytic amount of a palladium complex containing PPh3. In contrast, dppf-based palladium complexes showed excellent regioselectivity for the formation of linear alpha,beta-unsaturated ester. On the other hand, hydroesterification of 1,7-octadiyne with a catalyst system of Pd(OAc)(2)/PPh3/TsOH followed a different path to give a cyclized carbonylation product as the major product. A tentative mechanism involving a Pd-H species has been proposed for these reactions. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：117 / 122

页数：6

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