- One-pot preparation of carbamoyl benzotriazoles and their applications in the preparation of ureas, hydrazinecarboxamides and carbamic esters
-
Carbamoyl benzotriazoles were conveniently synthesized in one-pot from carboxylic acids, diphenyl phosphorazidate (DPPA) and 1H-benzotriazole (BtH). The reactivity and applications of carbamoyl benzotriazoles were also explored. Carbamoyl benzotriazoles react smoothly with amino acids, hydrazines and alcohols, thus providing facile access to the corresponding ureas, hydrazinecarboxamides and carbamic esters, respectively, in good to excellent yields.
- Mao, Hui,Liu, Huili,Tu, Yawei,Zhong, Zhiyun,Lv, Xin,Wang, Xiaoxia
-
-
- Trapping! of isocyanates with benzotriazole in situ - Preparation of carbamoyl benzotriazoles as an isocyanate alternative via curtius rearrangement
-
N-Aryl and N-alkenyl carbamoyl benzotriazoles were prepared in good to excellent yields from acyl azides and benzotriazole via Curtius rearrangement, while N-alkylcarbamoyl benzotriazoles were formed from N-alkanoyl benzotriazoles and sodium azide in one
- Zhong, Zhiyun,Wang, Xiaoxia,Kong, Lichun,Zhu, Xiangming
-
experimental part
p. 2461 - 2464
(2010/01/07)
-