[DBU][Ac]-catalyzed mild preparation of 6-amino-4-aryl-5-cyano-3-methyl-1,4-dihydropyrano[2,3-c]pyrazole derivatives

被引：0

作者：

Hamid Reza Shaterian

Marziyeh Sedghipour

Ebrahim Mollashahi

机构：

[1] University of Sistan and Baluchestan,Department of Chemistry, Faculty of Sciences

来源：

Research on Chemical Intermediates | 2014年 / 40卷

关键词：

Ionic liquid; Solvent-free; Multi-component reaction; Catalyst; Green chemistry;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

We report a new, one-pot, efficient, four-component condensation of hydrazine hydrate, ethyl acetoacetate, arylaldehydes, and malononitrile in the presence of a reusable weakly basic ionic liquid, 1,8-diazabicyclo[5.4.0]-undec-7-en-8-ium acetate, as catalyst, for synthesis of 6-amino-4-aryl-5-cyano-3-methyl-1,4-dihydropyrano[2,3-c]pyrazole derivatives under solvent-free conditions at room temperature. The method has several advantages, for example good yields, short reaction times, and simple work-up procedure.

引用

页码：2721 / 2728

页数：7

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