Lewis Acid-Catalyzed Cyclization of Enaminones with
Propargylic Alcohols: Regioselective Synthesis of Multisubstituted
1,2-Dihydropyridines
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Abstract
A highly
efficient BF<sub>3</sub>路Et<sub>2</sub>O-catalyzed cascade reaction
of enaminones with propargylic alcohols under mild reaction conditions
has been developed. This methodology offers regioselective access
to multisubstituted 1,2-dihydropyridines in good to excellent yields