Photochemical reactions of 1, 2-naphthoquinone and the substituted derivatives with a variety of aldehydes in the liquid phase have been investigated. The reaction with saturated aliphatic aldehydes gives a mixture of 3-acyl-1, 2-naphthalenediol and 1, 2-naphthalenediol monoacyl esters. On the other hand, the irradiation of the benzene solution of a 1, 2- naphthoquinone derivative and an aromatic aldehyde gives, in general, 1, 2- ...
