Reactions of Benzocyclopropene with Sulfonyl Isocyanates and Nitrones: Cycloadditions through C-C ?-Bond Rupture of Three-Membered Ring

Article abstract of DOI:10.1246/bcsj.64.106

Alkane- and arenesulfonyl isocyanates were added to benzocyclopropene across the C-C ?-bond of the three-membered ring, giving 2-sulfonyl-1-isoindolinones.The reaction with C,N-diphenylnitrone afforded a similar cyclization product, 3,4-dihydro-3,4-diphen