个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职:Director, State Key laboratory of Fine Chemicals
其他任职:精细化工国家重点实验室主任、国务院学科评议组成员
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:大连理工大学精细化工国家重点实验室
西部校区化工实验楼F-202#
http://peng-group.dlut.edu.cn/
联系方式:大连理工大学精细化工国家重点实验室 西部校区化工实验楼F-202 辽宁省大连市高新区凌工路2号,大连116024 Tel: 0411-84986306; Fax: 0411-84986292;课题组网址:http://peng-group.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