Photochemical reaction of o-alkylphenyl 1,3-diketones. a new method for the preparation of benzocyclobutenones
Abstract
Irradiation of o-alkylphenyl 1,3-diketones (1) in hexane gave benzocyclobutenols (2) which underwent thermal retro-aldol cleavage to yield benzocyclobutenones (3).