Process for the preparation of enamines; novel enamines and...

Details Process for the preparation of enamines; novel enamines and... Process for the preparation of enamines; novel enamines and...

C - Chemistry, Metallurgy

07

D

260/327, 260/602

C07D 333/48 (2006.01) C07D 211/84 (2006.01)

Patent

CA 1226869

ABSTRACT Process for the preparation of enamines according to formula Image wherein R = (substituted) alkyl, aryl, alkaryl or aralkyl and R2 = H, Hal, R1, R1SO2 or CN or R1 and R2 together form part of a ring system containing at least 3 carbon atoms, by reacting a compound according to formula Image with a hydride-type reducing agent, in particular LiA1H4 or NaBH4. The enamines (some of which are novel) can be used for the preparation of novel dihydropyridines, by reacting these enamines wherein R2 = H with .beta.-unsaturated ketones such as chalcone, these dihydropyridines may be of interest per se, or as intermediates in the preparation potentially biologically active compounds.

421645

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