Synthesis and characterization of asymmetric substituted dicarbamates  

作　　者：Chao Zhao Peng Fei Yang Shun Ping Wang Jun Ying Li Tian Duo Li 

机构地区：[1]Shandong Provincial Key Laboratory of Fine Chemicals, Shandong Polytechnic University, Jinan 250353, China

出　　处：《Chinese Chemical Letters》2011年第10期1167-1170,共4页中国化学快报（英文版）

基　　金：the financial support from the National Natural Science Foundation of China(No. 20676074)

摘　　要：Several new asymmetric substituted dicarbamates were synthesized with a convenient route.Firstly,tolylene-2,4-diisocyanate dimmer was obtained from monomer with tributylphosphine as catalyst.Then,the dimmer reacted with alcohol（R^1OH） to prepare carbamate substituted uretidione.Finally,uretidione ring was opened and the released isocyanate reacted with another alcohol （R^2OH,R^1≠R^2）.Several new asymmetric substituted dicarbamates were synthesized with a convenient route.Firstly,tolylene-2,4-diisocyanate dimmer was obtained from monomer with tributylphosphine as catalyst.Then,the dimmer reacted with alcohol（R^1OH） to prepare carbamate substituted uretidione.Finally,uretidione ring was opened and the released isocyanate reacted with another alcohol （R^2OH,R^1≠R^2）.

关 键 词：Asymmetric substituted dicarbamates Tolylene-2 4-diisocyanate Uretidione 

分 类 号：TQ613.5[化学工程—精细化工] TQ226.63