Water → (S)-tert-butyl 2-((S)-1-cyano-2-(4-(3-methyl-2-oxo-2,3-dihydrobenzo[d]oxazol-5-yl)phenyl)ethylcarbamoyl)piperidine-1-carboxylate

Participants

Reaction Steps

(Methoxycarbonylsulfamoyl)triethylammonium hydroxide, inner salt (137 mg) was added to a solution of (S)-tert-butyl 2-((S)-1-amino-3-(4-(3-methyl-2-oxo-2,3-dihydrobenzo[d]oxazol-5-yl)phenyl)-1-oxopropan-2-ylcarbamoyl)piperidine-1-carboxylate (120 mg) and triethylamine (0.128 ml) in dichloromethane (1 mL) and stirred for 3 h. Water was added and the mixture was extracted with DCM (3 times). The organic layers were dried over (magnesium sulfate), evaporated and purified by flash silica chromatography eluting with acetone 1:2 isohexane/acetone to give the subtitle compound (87 mg).

Provenance & Evidence