Citation: Chao Zhao, Peng Fei Yang, Shun Ping Wang, Jun Ying Li, Tian Duo Li. Synthesis and characterization of asymmetric substituted dicarbamates[J]. Chinese Chemical Letters, ;2011, 22(10): 1167-1170. doi: 10.1016/j.cclet.2011.05.009 shu

Synthesis and characterization of asymmetric substituted dicarbamates

Shandong Provincial Key Laboratory of Fine Chemicals, Shandong Polytechnic University, Jinan 250353, China

Received Date: 21 January 2011

Fund Project: The authors are grateful for the financial support from the National Natural Science Foundation of China (No.20676074).

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 (R¹OH) to prepare carbamate substituted uretidione. Finally, uretidione ring was opened and the released isocyanate reacted with another alcohol (R²OH, R¹≠R²).
- Asymmetric substituted dicarbamates,
- Tolylene-2,4-diisocyanate,
- Uretidione
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