A photobisdecarbonylation route to isoindenes: a new sythesis of 2,2-dimethyl-and 2,2-spirocyclopentyl-isoindene
Abstract
The title isoindenes have been prepared by u.v. photolysis of the appropriate 7,7-disubstitued benzonorbornene-2,3-diones, the syntheses of which are described.