A Facile Synthesis of 7,8-DI Aryl Coumarino and Flavano Benzo-Thiophenes
摘要:
The key step for the synthesis of 7-hydroxy 2,3-diarylsubstititted benzothiophenes 5a-f by starting from substituted 2-aryl-2-((2-methoxy phenyl)thio)acetophenones 3a-f as at? intermediate, consists of a Friedel-Crafts cyclization followed by demethylation by Lewis acids like BF3OEt2 and AlCl3 in DCM.
FACILE SYNTHESIS OF SUBSTITUTED 4-HYDROXY COUMARINOBENZOTHIOPHENES
作者:P.Naveen Kumar、B. Prasanna、G.V.P. Chandramouli
DOI:10.1515/hc.2001.7.3.271
日期:2001.1
A Facile Synthesis of 7,8-DI Aryl Coumarino and Flavano Benzo-Thiophenes
作者:G. V. P. Chandramouli、B. Prasanna、P. Naveen Kumar、P. Vijayakumar Reddy
DOI:10.1080/10426500210246
日期:2002.2.1
The key step for the synthesis of 7-hydroxy 2,3-diarylsubstititted benzothiophenes 5a-f by starting from substituted 2-aryl-2-((2-methoxy phenyl)thio)acetophenones 3a-f as at? intermediate, consists of a Friedel-Crafts cyclization followed by demethylation by Lewis acids like BF3OEt2 and AlCl3 in DCM.