PYRROLE STUDIES-XXIV; THE REACTIONS OF 1-METHYL-2-VINYLPYRROLE AND 1-PHENYL-2-VINYLPYRROLE WITH DIMETHYL ACETYLENEDICARBOXYLATE

Article abstract of DOI:10.1016/S0040-4020(01)92101-5

The reaction of dimethyl acetylenedicarboxylate with 1-methyl-2-vinylpyrrole is temperature dependent.At 80 deg C the predominant reaction is the <4?+2?> cycloaddition to give dimethyl 1-methyl-6,7-dihydroindole-4,5-dicarboxylate, whereas at room temperat