SEARCH Articles Figures Tables Chiral-o-quinodimethanes Diels-Alder reaction Diels-Alder reaction of o-quinodimethanes Diels-Alder reaction quinodimethanes Diels-Alder reaction quinodimethanes Quinodimethane Quinodimethanes Sulfones, acetoxyphenylo-quinodimethane precursor Diels-Alder reactions