期刊名称：Universitatea Politehnica din Timisoara. Buletinul Stiintific. Seria Chimie si Ingineria Mediului
印刷版ISSN：1224-6018
出版年度：2007
卷号：52(66)
期号：01-02
出版社：Universitatea Politehnica din Timisoara
摘要：A general method for the preparation of bis-ureas from bis(o-nitrophenyl)carbonate have been developed. Directional urea synthesis is achieved by sequential amine addtition to bis(o-nitrophenyl)carbonate in two steps: as a first step bis(o-nitrophenil) carbonate is reacted with benzyl amine to form benzyl-o-nitrophenyl carbamate; in the second step the carbamate is reacted with a variety of diamines in toluen to yield bis-ureas.
