Novel application of the palladium-catalyzed N-arylation of hydrazones to a versatile new synthesis of pyrazoles

被引：45

作者：

Haddad, N ^{[1
]}

Baron, J ^{[1
]}

机构：

[1] Boehringer Ingelheim Pharmaceut Inc, Dept Chem Dev, Ridgefield, CT 06877 USA

来源：

TETRAHEDRON LETTERS | 2002年 / 43卷 / 12期

关键词：

D O I：

10.1016/S0040-4039(02)00245-9

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

A versatile synthesis of pyrazoles from aryl benzophenone hydrazones was demonstrated with a variety of 1,3-bifunctional substrates under acidic conditions. The obtained regioselectivity is consistent with transhydrazonation followed by subsequent cyclization. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：2171 / 2173

页数：3

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