1-Aminohomopiperidine → 5-(4-Chlorophenyl)-4-(2,4-dichlorophenyl)-n-(hexahydro(1 h)azepin-1-yl)thiazole-2-carboxamide

Participants

Reaction Steps

Part A: To a solution of 5-(4-chlorophenyl)-4-(2,4-dichlorophenyl)thiazole-2-carboxylic acid (0.50 gram, 1.30 mmol) in dichloromethane (10 mL) is successively added 1-aminohexahydro(1H)azepine (0.15 gram, 1.30 mmol), 7-aza-1-hydroxybenzotriazole (0.18 gram, 1.30 mmol), 7-azabenzotriazol-1-yloxytris(pyrrolidino)phosphonium hexafluorophosphate (PyAOP) (0.68 gram, 1.30 mmol) and diisopropylethylamine (0.34 mL, 1.95 mmol) and the resulting solution is stirred for 1 hour at room temperature. Concentration In vacuo gives a crude oil (2.01 gram) which is purified by flash chromatography (ethyl acetate/petroleum ether=1/3 (v/v)) to give 5-(4-chlorophenyl)-4-(2,4-dichlorophenyl)-N-(hexahydro(1 H)azepin-1-yl)thiazole-2-carboxamide (0.350 gram, 56% yield). Melting point: 185-186° C. (after recrystallisation from diisopropyl ether).

Provenance & Evidence