117319-82-1Relevant articles and documents
Smooth Conversion of 3,4-Diarylcoumarins and 3,4,5-Triaryl-2(5H)-furanones to 2H-Chromene and 2,5-Dihydrofuran Derivatives with Dimethyl Sulfide-Borane Complex
Verma, Parul,Singh, Sangeeta,Dikshit, D. K.,Ray, Suprabhat
, p. 68 - 70 (2007/10/02)
Reaction of 3,4-diarylcoumarins (3,4-diaryl-2-oxo-2H-1-benzopyrans) and 3,4,5-triaryl-2(5H)-furanones with dimethyl sulfide-borane complex affords the corresponding 2H-chromenes (2H-1-benzopyrans) and 2,5-dihydrofurans in high yields. 3,4-Diaryl-2(5H)-fur