Potassium Carbonate → N-(4-cyano-1-ethoxy-piperidin-4-yl)-2-(2,4,6-trimethyl-phenyl)-acetamide

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반응 단계

3.0 g of (2,4,6-trimethyl-phenyl)-acetyl chloride and 10 g of potassium carbonate in 90 ml of acetonitrile were treated at 0° C. with a solution of 3.6 g of 4-amino-1-ethoxy-piperidine-4-carbonitrile in 30 ml of acetonitrile. After stirring for 18 hours at room temperature the reaction mixture was poured into 100 ml of ice water and extracted with ethyl acetate. The organic phase was washed with brine and concentrated. Chromatography (heptane/ethyl acetate 5:1) yielded 4.5 g of N-(4-cyano-1-ethoxy-piperidin-4-yl)-2-(2,4,6-trimethyl-phenyl)-acetamide as a solid, mp: 194-195° C.

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