NEW EVIDENCE SUPPORTING BIS(THIAZOLIN-2-YLIDENE)S AS THE ACTUAL CATALYTIC SPECIES IN THE BENZOIN CONDENSATION

被引：31

作者：

CASTELLS, J ^{[1
]}

DOMINGO, L ^{[1
]}

LOPEZCALAHORRA, F ^{[1
]}

MARTI, J ^{[1
]}

机构：

[1] UNIV BARCELONA,DEPT QUIM ORGAN,MARTI & FRANQUES 1-11,E-08028 BARCELONA,SPAIN

来源：

TETRAHEDRON LETTERS | 1993年 / 34卷 / 03期

关键词：

D O I：

10.1016/0040-4039(93)85116-E

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Polymethylene-bridged (n= 2-8) thiazolium and benzothiazolium salts (plus bases) are used as catalysts for the benzoin condensation and it is found that catalytic activity depends strongly on the methylene bridge length. This result supports a previous postulation that bis(thiazolin-2-ylidene)s, and not thiazolin-2-ylidenes, are the catalytic species in the benzoin condensation catalyzed by thiazolium salts plus base.

引用

页码：517 / 520

页数：4

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