Takashi Matsumoto, Y. Kawase, Mutsumu Nanbu
Jun 1, 1958
Citations
0
Influential Citations
14
Citations
Journal
Bulletin of the Chemical Society of Japan
Abstract
5′-Carbethoxy-furano(2′,3′: 7,8)-2-methylisofiavone (IV) was obtained from 7-hydroxy-8-formyl-2-methylisoflavone (III) and ethyl bromomalonate by Tanaka’s method for benzofuran synthesis. The condensation product IV was hydrolyzed to give the free acid V, which was decarboxylated in quinoline with copper powder to yield furano(2′,3′: 7,8)-2-methylisoflavon (VIII). The structures of the condensation product and its derivatives were discussed.