ISOCYANATE REACTIONS IN AND WITH N,N-DIMETHYLFORMAMIDE

被引：7
|
作者：
JOEL, D
MULLER, P
AHL, R
机构：
[1] Zentrum für Makromolekulare Chemie, Berlin, O- 1199
来源：
ANGEWANDTE MAKROMOLEKULARE CHEMIE | 1992年 / 197卷
关键词：
D O I：
10.1002/apmc.1992.051970111
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Solutions of phenylisocyanate (I) in DMF were stored at different temperatures in the presence of both polyurethane catalysts and 1,3-diphenylurea (II). The reaction products were determined by HPLC. Beside the hydrolysis of I to II, a significant reaction of I with II to 1,3,5-triphenylbiuret (III) was observed at 20-degrees-C. Above 60-degrees-C, I reacted with the solvent to form N,N-dimethyl-N'-phenylformamidine (V). In DMF, III dissociated to I and II already at temperatures > 40-degrees-C.
引用
收藏
页码：131 / 139
页数：9
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