Photoproducts from 4,4′-dimethoxy-2,2′-binaphthyl-1,1′-quinone
Abstract
Exposure of its solutions to visible light causes the title quinone (1) to undergo cyclisations and to react with water, ethanol, and carbon tetrachloride. The products include the furo-1,4-quinones (2; R = Me and Et) and the related 1,2-quinone (4; R = Me), the hydroxy-quinones (3; R = Me and Et), the lactone (5), and the quinone dichloromethide (7).