Room-Temperature Synthesis of Pyrazoles, Diazepines, β-Enaminones, and β-Enamino Esters Using Silica-Supported Sulfuric Acid as a Reusable Catalyst Under Solvent-Free Conditions

被引：63

作者：

Chen, Xiang ^{[1
]}

She, Jin ^{[1
]}

Shang, Zhi-Cai ^{[1
]}

Wu, Jun ^{[1
]}

Zhang, Peizhi ^{[2
]}

机构：

[1] Zhejiang Univ, Dept Chem, Hangzhou 310027, Peoples R China

[2] Zhejiang Univ Sci & Technol, Sch Chem & Biol Engn, Hangzhou, Peoples R China

来源：

SYNTHETIC COMMUNICATIONS | 2009年 / 39卷 / 06期

关键词：

Diazepines; -enaminones; -enamino esters; H2SO4SiO2; heterogeneous recyclable catalyst; pyrazoles; solvent-free conditions; EFFICIENT; DERIVATIVES; KETONES; AGENTS; MEDIA; CONDENSATION; ANALOGS; MILD;

D O I：

10.1080/00397910802441551

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Silica-supported sulfuric acid (H2SO4SiO2) has been utilized as a heterogeneous recyclable catalyst for a highly efficient regio- and chemoselective condensation of hydrazines/hydrazides, diamines, and primary amines with various -dicarbonyl compounds at room temperature to afford pyrazoles, diazepines, and -enaminones/-enamino esters under solvent-free conditions within 5-15min.

引用

页码：947 / 957

页数：11

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