Abstract
Asymmetric Diels-Alder reactions between aza-chalcone and cyclopentadiene (CP) catalyzed by the binaphthol-titanium (BINOL – Ti) in the presence of HMPA (80 mole %) were studied. The products were obtained with up to 87% ees.
Keywords: Diels-Alder reaction, 2-alkenoyl pyridine, binaphthol-titanium complex, catalyst, aza-chalcone, cycloaddition