SEARCH Articles Figures Tables 1 -Oxa-1,3-butadienes Diels-Alder reactions Hetero Diels-Alder Additions of 1-Oxa-1,3-dienes Organocatalysis of Oxa-Hetero-Diels-Alder Reaction Oxa-Diels-Alder reactions Oxa-hetero-Diels-Alder reaction Syntheses with Oxa Diels-Alder Reactions