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
收藏
页码：947 / 957
页数：11
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