Low-temperature synthesis of tetraalkylureas from secondary amines and carbon dioxide

被引：43
|
作者：
Tai, CC [1 ]
Huck, MJ [1 ]
McKoon, EP [1 ]
Woo, T [1 ]
Jessop, PG [1 ]
机构：
[1] Univ Calif Davis, Dept Chem, Davis, CA 95616 USA
来源：
JOURNAL OF ORGANIC CHEMISTRY | 2002年 / 67卷 / 25期
关键词：
D O I：
10.1021/jo026369j
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
The reaction of dialkylamines with CO2 giving tetraalkylureas can be performed at 60 degreesC. The reaction requires CCl4, is weakly promoted by DMAN or PPh3, and is not promoted by a Pd catalyst. A two-step procedure, in which dialkylammonium dialkylcarbamate is produced in situ and then reacted with CCl4 and free dialkylamine, gave greater yields of urea than a simple single-stage procedure.
引用
收藏
页码：9070 / 9072
页数：3
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