SEARCH Articles Figures Tables Diels hetero Diels-Alder dienes Diels-Alder reaction hetero-dienes Diene Diels-Alder reaction Diene reaction Dienes Diels Alder reactions Dienes imines Dienes, reactions Hetero imines Hetero-1 3-dienes Hetero-1,3-diene Hetero-Diels-Alder Hetero-Diels-Alder reaction Imine reaction Imines, Diels-Alder reaction Imines, reactions