Chinese Chemical Letters

1 H NMR analysis of the tolylene-2, 4-diisocyanate–methanol reaction

PF Yang, Y De Han, TD Li, JY Li

文献索引：Yang, Peng Fei; Han, Yong De; Li, Tian Duo; Li, Jun Ying Chinese Chemical Letters, 2010 , vol. 21, # 7 p. 853 - 855

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被引用次数: 10

摘要

Tolylene-2, 4-diisocyanate (2, 4-TDI) 1 reacts with methanol through two simultaneous paths in the polyurethane reaction, which involve two different intermediates–tolylene-4- carbamatic-2-isocyanate 2 and tolylene-2-carbamatic-4-isocyanate 3, and the final product is tolylene-2, 4-dicarbamate 4. The–CH3 chemical shifts in benzene ring in compounds 1, 2, 3 and 4 can be easily tested and well distinguished, through which those four compounds ...