Photolysis of Substituted Benzylidineacenaphthenones

Department of Chemistry, M. D. University, Rohtak-124 001

Manuscript received 7 March 1988, revised 27 September 1988, accepted 4 October 1988

Substituted benzylidineacenaphthenones were photolysed in benzene in presence of air. Cyclodehydropenation led to substitnted-benzochrysenes as well as photo-oxidative cleavage of benzylidine double bond leading to Dapbthalene-1,8-dicarboxylic acid anhydride as the major product. Photolysis of acenaphthenone also gave naphthalene­1,8-dicarboxylic acid anhydride under the same condition in which the benzylidine analogues were irradiated.