Synthesis of Nitrogen-containing Heterocycles by the Imino Diels-Alder Reaction

This review describes the major advances reported during the p a t fifteen years on synthesis of heterocyclic compounds using imino dienophiles in the Diels Alder L4+2I-cycloaddition reaction.CONTENTS A. Introduction B. Survey of imino dienophiles 1. N-Sulfonyl imines 2. N-Acyl imines a .Acyclic b.Cyclic 3. Iminium salts and imines 4. Miscellaneous imino compounds 5. Intramolecular cycloadditions of imino compounds C. Regiochemisfry