Synthesis of 2H-benzo[g]furo/thieno/pyrrolo[2,3-e]indazoles via Intramolecular Dehydrogenation Photocyclization  

作　　者：Wei Zhang Ping Wang Xi Zhang Rui Wang Tao Wang Zhicun Liu Zunting Zhang 

机构地区：[1]Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry,National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest of China,School of Chemistry and Chemical Engineering,and Basic Experimental Teaching Center,Shaanxi Normal University,Xi'an,Shaanxi 710062,China

出　　处：《Chinese Journal of Chemistry》2021年第8期2213-2219,共7页中国化学（英文版）

基　　金：We are grateful for financial support by the National Natural Science Foundation of China(No.21672132).

摘　　要：A catalyst-,acid-and base-free,environmental-friendly method for synthesis of 2/7-benzo[g]furo[2,3-e]indazoles,2H-benzo[g]-thieno[2,3-e]indazoles and 2H-benzo[g]pyrrolo[2,3-e]indazoles via UV light irradiation of 3-phenyl-4-(2-heteroaryl)pyrazoles(aryl=furanyl,thiophenyl and N-methylpyrrolyl)in EtOH/H_(2)O at room temperature under argon atmosphere was described.

关 键 词：INDAZOLES 6π-electroncyclization PHOTOCYCLIZATION Dehydrogenative annulation Chemo-selectivity 

分 类 号：O64[理学—物理化学]