Methyl 2H-azirine-3-carboxylates as dienophiles: Synthesis of methyl 1-azabicyclo[4.1.0]hept-3-ene-6-carboxylates

Article abstract of DOI:10.1055/s-1997-1192

Methyl 2-aryl-2H-azirine-3-carboxylates are good dienophiles. They react with cyclopentadiene, cyclohexa-1,3-diene and 2,3-dimethylbuta-1,3-diene at or below 50°C to give products of [4 + 2]-cycloaddition to the carbon-nitrogen double bond. The cycloaddit