492470-94-7Relevant articles and documents
Facile synthesis of substituted 4-hydroxy coumarinobenzothiophenes
Kumar, P. Naveen,Prasanna,Chandramouli
, p. 271 - 276 (2001)
The Lewis acid in dichloromethane mediated cyclization and demethylation of substituted 2-aryl-2-((2-methoxy phenvl)thio)acetophenones 3a-f at room temperature converting into 7-hydroxy-2,3-diaryl substituted benzothiophenes 4a-f.These were condenced with substituted malonic acids by the same reagent to produce the substituted 4-hydroxy coumarino benzothiophenes (6a-f & 7a-f).