Trimethylsilyl isocyanate → HCID 17808983, compound

Participants

Reaction Steps

To a solution of 4-amino-5-chloro-2-methoxy-N-[1-(4-piperidinylmethyl)-4-piperidinyl]benzamide (610 mg) in methylene chloride (30 ml) is added trimethylsilyl isocyanate (180 mg) under ice-cooling, and the mixture is stirred at room temperature for 15 hours. The reaction mixture is washed with water and a saturated aqueous sodium chloride solution, dried over anhydrous magnesium sulfate, and the solvent is evaporated under reduced pressure. The residue is purified by basic silica gel column chromatography (eluent; chloroform: methanol=40:1) to give 4-amino-5-chloro-N-[1-(1-carbamoyl-4-piperidinylmethyl)-4-piperidinyl]-2-methoxybenzamide (440 mg) as white amorphous.

Provenance & Evidence