Photochemical Isomerization of 6,7-Dicyano- and 6,7-Bis(methoxycarbonyl)-3-phenylsulfonyl-(2,4-exo)-3-azatricyclo2,4>oct-6-ene

Article abstract of DOI:10.1246/bcsj.54.2827

The photochemical reactions of 6,7-bis(3-methoxycarbonyl)- and 6,7-dicyano-3-phenylsulfonyl-(2,4-exo)-3-azatricyclo<3.2.1.0^2,4>oct-6-ene afford the corresponding tetracyclic compounds (3b and 3c) by the skeletal isomerization, but those of thei