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.