Abstract
Highly efficient enantioselective synthesis of optically active 2,6-disubstituted dihydropyrones was easily available by hetero-Diels-Alder reaction of aldehydes in presence of 20 mol% (R)-(+)-BINOL-Ti(IV) complex under mild reaction conditions. All reaction products were obtained in moderate to excellent yields (up to 99%) with high enantioselectivities (up to 99% ee).
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