Synthetic Studies on the Benzofuran Derivatives. Part III. Reaction of 7-Hydroxy-8-formyl-2-methylisoflavone with Ethyl Bromomalonate and Synthesis of Furano(2′,3′:7,8)-2-methylisoflavone
- 1 June 1958
- journal article
- Published by Oxford University Press (OUP) in Bulletin of the Chemical Society of Japan
- Vol. 31 (6) , 688-690
- https://doi.org/10.1246/bcsj.31.688
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.This publication has 4 references indexed in Scilit:
- Synthetic Studies on the Benzofuran Derivatives. II. Reactions of Aromatic o-Hydroxyaldehyde Derivatives and Ethyl BromomalonateBulletin of the Chemical Society of Japan, 1957
- Synthetic Studies on the Benzofuran Derivatives. Part I. A New Synthesis of KaranjinBulletin of the Chemical Society of Japan, 1955
- Synthetic experiments in the benzo-pyrone seriesProceedings of the Indian Academy of Sciences - Section A, 1951
- Coumarones from o-Hydroxyaldehydes and Bromomalonic EsterJournal of the American Chemical Society, 1951