Sodium Chloride → 4-Amino-1-dimethylamino-piperidine-4-carbonitrile

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Reaction Steps

6.3 g 1-Dimethylamino-piperidin-4-one (prepared as described in Journal of Medicinal & Pharmaceutical Chemistry, 4, 423-36; 1961) is dissolved in 135 ml aqueous ammonia (25%). To this solution 3.55 g ammonium chloride is added, then 4.34 g sodium cyanide. The reaction mixture is stirred at room temperature for 18 hours. Then the mixture is saturated with sodium chloride, and four times extracted with ethyl acetate. The organic layer is dried over sodium sulfate, and the solvent is evaporated, to yield 5.6 g 4-Amino-1-dimethylamino-piperidine-4-carbonitrile as a yellow oil. 1H-NMR (CDCl3): 2.95 ppm (m, 2H), 2.65 ppm (m, 2H), 2.40 ppm (s, 6H), 2.05 ppm (m, 2H), 1.80 ppm (m, 2H), 1.75 ppm (s, broad, 2H).

Provenance & Evidence