Photoinduced electron transfer reactions of flavone with amines -the syntheses of 2,4′- And 2,2′-biflavanoids

Article abstract of DOI:10.1016/0040-4039(95)00414-8

Photoinduced electron transfer reactions of flavone (FL) with triethylamine (TEA) in benzene or in acetonitrile gave meso- 2,2′-biflavone 1 and (±)-2,2′-biflavone 2, as well as 2,4′-biflavanoid 3 in good total yield (77% in acetonitrile and 94% in benzene