Carbon Tetrachloride → 3-benzyl-6-[4-(5-chloro-1H-imidazol-2-yl)-piperidin-1-yl]-4,5-dimethyl-pyridazine

Participants

Reaction Conditions

Reaction Steps

To a solution of 1-(6-benzyl-4,5-dimethyl-pyridazin-3-yl)-piperidine-4-carboxylic acid cyanomethyl-amide (20 mg, 0.055 mmol) and triphenyl phosphine in acetonitrile (1 mL) at 25° C. is added carbon tetrachloride (42 mg, 0.28 mmol). After being stirred at 50° C. for 3 h, the mixture is concentrated, and diluted with CH2Cl2 (10 mL) and washed with sodium hydroxide (2 mL, 1N), and H2O (2 mL), dried over Na2SO4, filtered and concentrated. The crude product is purified by HPLC (CH3CN/H2O: 22%˜45% with 0.1% TFA) to give 3-benzyl-6-[4-(5-chloro-1H-imidazol-2-yl)-piperidin-1-yl]-4,5-dimethyl-pyridazine (11.8 mg, 56%).

Provenance & Evidence