Dibenzoylmethane in the Synthesis of Selenium Di- and Tetrahydropyridine-3-carbonitriles

Abstract

3-Cyano-6-hydroxy-1,4,5,6-tetrahydropyridine-2-ammonium selenolates have been synthesized by the reaction of cyanoselenoacetamide, furan-2- or thiophene-2-carbaldehyde, and dibenzoylmethane in ethanol in the presence of an excess of piperidine or morpholine under argon and then used to obtain 2-alkylselenodi- and tetrahydropyridine-3-carbonitriles. The structures of the latter products were analyzed by X-ray diffraction.