m-Chloroperbenzoic acid → HCID 178427149, compound

Participants

Reaction Conditions

Reaction Steps

204 mg (0.48 mmol) N-[(1S)-1-(5-chloro-1H-benzimidazol-2-yl)-ethyl]-3-methyl-4-(thiomorpholin-3-on-4-yl)-benzamide are dissolved in a mixture of 12 ml dichloromethane and 1.2 ml acetic acid at −15° C. and combined with 110 mg (0.48 mmol) 3-chloroperbenzoic acid. The mixture is then stirred for one hour at −15 to −10° C., heated to ambient temperature and stirred for a further 3 hours. Then the reaction mixture is combined with semi-concentrated sodium hydrogen carbonate solution and extracted with a solvent mixture dichloromethane/methanol 19:1. The combined organic phases are washed with water, dried over magnesium sulphate, evaporated down i. vac. and purified by chromatography on silica gel (eluting gradient: ethyl acetate/(ethanol/conc. ammonia solution 19:1)=1:0→4:1).

Provenance & Evidence