Arylboronic acid-catalyzed direct condensation of carboxylic acids with ureas

被引：57

作者：

Maki, T

Ishihara, K

Yamamoto, H

机构：

[1] Nagoya Univ, Grad Sch Engn, Nagoya, Aichi 4648603, Japan

[2] Univ Chicago, Dept Chem, Chicago, IL 60637 USA

来源：

SYNLETT | 2004年 / 08期

关键词：

acylations; catalysis; condensation; green chemistry; nitriles;

D O I：

10.1055/s-2004-825615

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

The first example of the catalytic direct condensation of carboxylic acids with ureas to give N-acylureas, N,N'-diacyl-2-imidazolidones, and poly(N,N'-diacyl-2-imidazolidone)s is described. Arylboronic acids bearing electron-withdrawing substituents are highly effective as catalysts for this condensation. Furthermore, a new and efficient one-pot procedure for the conversion of carboxylic acids and urea to nitriles via N-acylurea intermediates was accomplished by using arylboronic acid and rhenium(VII) oxo complexes as hybrid catalysts.

引用

页码：1355 / 1358

页数：4

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