1,3-Dipolar Cycloaddition Reactions of the Ylide Derived from 6-Phenacyl-benzo[f][1,7]naphthyridinium Bromide

Abstract

The 1,3-dipolar cycloaddition reactions of 4,6-diazaphenanthrene 6-phenacylide formed in situ from the quaternary 6-phenacylbenzo[f][1,7]naphthyridinium bromide in basic medium were examined; methacrylic acid, methyl methacrylate, butyl vinyl ether, methyl vinyl ketone, maleic anhydride and dimethyl acetylenedicarboxylate were used as the dipolarophiles.