Ammonia → HCID 19348435, compound

Participants

Reaction Steps

510 mg (3.15 mmol) of N,N'-carbonyldiimidazole were added to a solution of 1.142 g (2.42 mmol) of N-(2-t-butyl-5-carboxyphenyl)-3-(2-methoxy-4-methylthiophenyl)octanamide (prepared as described in Preparation 31A) in 10 ml of acetonitrile, and the resulting mixture was stirred at room temperature for 1 hour, after which 0.79 ml (12.1 mmol) of 28% w/w aqueous ammonia. The reaction mixture was stirred for 5 hours, after which it was diluted with water, and the diluted aqueous mixture was freed from the organic solvent by distillation under reduced pressure. The aqueous concentrate was extracted with ethyl acetate. The extract was washed with 2 N aqueous hydrochloric acid, with a 0.5 N aqueous solution of sodium hydroxide, with water and with a saturated aqueous solution of sodium chloride, after which it was dried over magnesium sulfate. The solvent was removed by distillation under reduced pressure, and the resulting residue was recrystallized from ethyl acetate, to give 962 mg (yield 84%) of the title compound as crystals, melting at 171-172° C. (from ethyl acetate).

Provenance & Evidence