Sodium Iodide → {4-[1-(4-Chloro-phenyl)-cyclohexyl]-thiazol-2-yl}-[2-(1-methyl-pyrrolidin-2-yl)-ethyl] amine

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A solution of 2-chloro-1-[1-(4-chloro-phenyl)-cyclohexyl]-ethanone (144.8 mg, 0.53 mmol) and sodium iodide (80 mg, 0.53 mmol) in acetone (4 mL) was stirred at room temperature for 10 min. Next, [2-(1-methyl-pyrrolidin-yl)ethyl] thiourea (100 mg, 0.71 mmol) was added. The resulting mixture was heated at 50° C. overnight. After the mixture was allowed to cool to room temperature, it was diluted with 5% sodium hydrogen carbonate in water and then extracted with ethyl acetate (3×20 mL). The extracts were combined, and dried over anhydrous sodium sulfate, filtered and concentrated to give an oil. The crude was purified by column chromatography on silica gel using dichloromethane/2 N ammonia in ethanol (95:5) to give {4-[1-(4-chloro-phenyl)-cyclohexyl]-thiazol-2-yl}-[2-(1-methyl-pyrrolidin-2-yl)-ethyl] amine, 95, as an oil (150 mg, 70%). 1H (CDCl3, 300 MHz) δ 7.30–7.21 (m, 4H), 6.02 (s, 1H), 5.67 (s, 1H), 3.67–1.52 (m, 24H) ppm; 13C(C6D6, 75 MHz) δ 22.9, 23.5, 26.9, 29.4, 30.8, 36.7, 40.8, 43.2, 46.4, 57.4, 64.9, 101.2, 128.7, 129.4, 132.0, 146.8, 160.1, 169.5 ppm.

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