Bimolecular Cycloaddition Reactions of Isomuenchnones Derived from the Rhodium(II) Catalyzed Cyclization of Diazo Pyrrolidinones

Article abstract of DOI:10.1016/S0040-4020(01)86338-9

Treatment of diazo substituted pyrrolidinones with a catalytic amount of rhodium(II) acetate in refluxing benzene results first in the formation of a rhodium carbenoid which then cyclizes onto the neighboring carbonyl oxygen to produce an isomuenchnone ri