Trichloroacetic acid as a solid heterogeneous catalyst for the rapid synthesis of dihydropyrano[2,3-c]pyrazoles under solvent-free conditions

被引：24

作者：

Karimi-Jaberi, Zahed ^{[1
]}

ReyazoShams, Mohammad Mehdi ^{[1
]}

机构：

[1] Islamic Azad Univ, Firoozabad Branch, Dept Chem, Fars, Iran

来源：

HETEROCYCLIC COMMUNICATIONS | 2011年 / 17卷 / 5-6期

关键词：

aldehyde; dihydropyranopyrazoles; malononitrile; trichloroacetic acid; ONE-POT SYNTHESIS; ROOM-TEMPERATURE; 3-COMPONENT SYNTHESIS; AQUEOUS-MEDIA; DERIVATIVES; AMINOPHOSPHONATES; EFFICIENT;

D O I：

10.1515/HC.2011.046

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

A one-pot, three-component reaction of an aromatic aldehyde, malononitrile and 3-methyl-1-phenyl-2-pyrazolin-5-one in the presence of a catalytic amount of trichloroacetic acid produces a 6-amino-4-aryl-5-cyano-3-methyl-1-phenyl-1,4-dihydropyrano[2,3-c] pyrazole in excellent yield and in a short reaction time.

引用

页码：177 / 179

页数：3

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