Return to Article Details HETEROCYCLIC COMPOUNDS WITH A BRIDGE NITROGEN ATOM. 14. CYCLOADDITION OF ACETYLENEDICARBOXYLIC ACID ESTER TO 2-CHLORO-N-PHENACYLPYRIDINIUM YLIDE. CRYSTAL STRUCTURE OF DIMETHYL ESTER OF 5-CHLORO-3-(<i>p</i>-NITROBENZOYL)INDOLIZINE-1,2-DICARBOXYLIC ACID Download Download PDF