One-pot preparation of carbamoyl benzotriazoles and their applications in the preparation of ureas, hydrazinecarboxamides and carbamic esters
作者:Hui Mao、Huili Liu、Yawei Tu、Zhiyun Zhong、Xin Lv、Xiaoxia Wang
DOI:10.2298/jsc150126069m
日期:——
synthesized in one-pot from carboxylic acids, diphenylphosphorazidate (DPPA) and benzotriazole (BtH). The reactivity and applications of carbamoyl benzotriazoles were also explored. Carbamoyl benzotriazoles react smoothly with amino acids, hydrazines and alcohols respectively, thus providing facile access to the corresponding ureas, hydrazinecarboxamides and carbamic esters in good to excellent yields
氨基甲酰基苯并三唑可方便地由羧酸,叠氮磷酸二苯酯(DPPA)和苯并三唑(BtH)一锅合成。还探讨了氨基甲酰基苯并三唑的反应性和应用。氨基甲酰基苯并三唑分别与氨基酸,肼和醇平稳反应,因此可以轻松获得相应的脲,肼甲酰胺和氨基甲酸酯,收率高至优异。