SEARCH Articles Figures Tables Double intramolecular hetero-Michael Double intramolecular hetero-Michael addition Hetero Diels-Alder reaction intramolecular Lewis acid Hetero Diels-Alder reaction intramolecular Lewis acid catalysed Hetero-Diels-Alder reaction intramolecular, forming Hetero-Diels-Alder reactions intramolecular Intramolecular Hetero Cycloadditions Intramolecular Hetero and Diels-Alder Reactions Intramolecular hetero-Diels-Alder