Photorearrangement of dimethyl 9,10-cyclopropano-9,10-dihydroanthracene-11,12-dicarboxylate
Abstract
Dimethyl 9,10-cyclopropano-9,10-dihydroanthracene-11,12-dicarboxylate (1b) has been prepared and found to rearrange photochemically by direct or sensitized irradiation with participation of the cyclopropyl ring to the isomers (4a) and (5a).