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个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职：中国化学会创始会士、常务理事，中国化工学会会士
性别：男
毕业院校：大连理工大学
学位：博士
所在单位：化工学院
学科：应用化学. 精细化工. 化学生物学
办公地点：大连理工大学西部校区知顺楼F-202#
http://peng-group.dlut.edu.cn/
联系方式：大连理工大学西部校区知顺楼F-202 辽宁省大连市高新区凌工路2号，大连116024 课题组网址：http://peng-group.dlut.edu.cn/ E-mail: pengxj@dlut.edu.cn
电子邮箱：pengxj@dlut.edu.cn
N,N'-phosgenation with triphosgene in the synthesis of direct dyes containing the ureylene group
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论文类型：期刊论文
发表时间：1996-12-01
发表刊物：DYES AND PIGMENTS
收录刊物：SCIE、Scopus
卷号：32
期号：4
页面范围：193-198
ISSN号：0143-7208
关键字：direct dyes; phosgene; triphosgene; phosgenation; carbonylation; N,N'-substituted urea
摘要：Using triphosgene as a substitute for phosgene, many 'urea-containing' direct dyes or intermediates (i.e. containing the ureylene-NHCOHN-system) can be safely and conveniently synthesised. The phosgenation is affected by hydrolysis side-reactions and the yields of product are dependent on the relative reactivity of the reacting amino groups, pH, temperature and the excess of triphosgene used. J-acid urea, C.I. Direct Yellow 50, and C.I. Direct Red 75 were obtained in high yield (> 93%) and with only a slight excess of triphosgene. Copyright (C) 1996 Elsevier Science Ltd