23045-58-1Relevant articles and documents
An intramolecular Schmidt reaction of δ-azido N-acylbenzotriazoles
Liu, Chun-Fang,Cao, Zhi-Qi,Ding, Shao-Lei,Zhu, Jing,Gu, Peiming
, p. 1147 - 1151 (2021)
A Lewis acid promoted intramolecular Schmidt reaction of N-acylbenzotriazoles with alkyl azides was designed and realized. The benzotriazole was not only employed as an efficient activator for initiating the Schmidt rearrangement but also used as a powerful terminator for the subsequent nucleophilic trapping of the isocyanate ion and/or N-acyliminium ion from the rearrangement. Thirteen δ-azido N-acylbenzotriazoles were investigated, and the conversion afforded the desired benzotriazole-1carboxamides and lactams with good to excellent yields.