An evidence for remarkable difference of the electrophilicity between two carbonyl groups in the photoexcited 1,2-naphthoquinone. Photocycloaddition reaction of 1,2-naphthoquinone with olefins

Article abstract of DOI:10.1246/cl.1989.5

The <4+2>photocycloaddition reactions between 1,2-naphthoquinone and olefins have been investigated.From the results of the stereochemistry and the regiochemistry of the adducts, it is concluded that the carbonyl oxygen atom at the position 2 in the photo