Cu–benzotriazole-catalyzed electrophilic cyclization of N-arylimines: a methodical tandem approach to O-protected-4hydroxyquinazolines-
作者:Satyanarayana Battula、Ram A. Vishwakarma、Qazi Naveed Ahmed
DOI:10.1039/c4ra07377k
日期:——
A remarkably efficient approach to O-protected-4-hydroxyquinazolines has been developed via the copperâbenzotriazole (CuâBtH)-catalyzed intramolecular electrophilic cyclization of N-arylimines, achieved through the reaction of 2-aminobenzonitriles and various aldehydes.
We developed an unprecedented iridium-catalyzed C−H activation/cyclization to synthesize isoquinoline compounds efficiently using ethyl benzimidate and N-alkoxyamides. This reaction has the advantages of wide substrate adaptability, short reaction times and no need for an inert atmosphere. In addition, some drug molecules smoothly converted into aminating reagents, reacted efficiently and afforded