硝基芳基化合物和芳胺羰基化合成N,N′-二芳基脲  

Selenium-catalyzed reductive carbonylation of nitroaromatics and aromatic amines to N,N’-diaryl ureas

作　　者：张善言[1] 郑焰[1] 

机构地区：[1]四川大学化学系

出　　处：《天然气化工—C1化学与化工》1992年第2期27-29,共3页Natural Gas Chemical Industry

基　　金：国家自然科学基金资助

摘　　要：用硒粉作催化剂,三乙胺为助催化剂,硝基芳基化合物和芳胺进行还原羰基化反应合成N,N′-二芳基脲。研究了催化剂用量、压力、温度、时间对产率的影响。此法催化剂活性高,反应条件温和,二芳基脲产率为68.8%～80.8%,N,N′-二芳基脲经甲醇醇解可生成N-苯基氨基甲酸甲酯,产率为93%。N,N'-diaryl ureas were obtained in good yields by reductive carbonylation of nitroaromatics and aromatic amines in the presence of selenium powder with triethylamine as a promoter. The effect of catalyst amount used, reaction pressure, temperature and time on their yields were investigated. The process is characterized by high catalytic activity and mild reaction conditions with a yield of diaryl ureas being 68.8%～80.8% . N, N'-diphenyl urea can be alcoholysized by methanol to methyl-N-phenyl carbamate in a yield of 93%.

关 键 词：二芳基脲 硝基化合物 硒催化剂 

分 类 号：TQ246[化学工程—有机化工]