Diisopropylethylamine → HCID 66723689, compound

Participants

Reaction Steps

(R)-4-(Phenylthio)-3-(4-sulfamoyl-2-(trifluoromethylsulfonyl)phenylamino)butanoic acid (INTERMEDIATE 8, 0.8 g, 1.60 mmol) was added to a solution of (S)-3-((tert-butyldiphenylsilyloxy)methyl)morpholine, hydrochloride salt (INTERMEDIATE 103, 0.57 g, 1.60 mmol), DIPEA (0.84 ml, 4.81 mmol) and HATU (0.92 g, 2.41 mmol) in DCM (10 ml) and the resulting mixture was stirred at room temperature for 2 hours. The mixture was diluted with DCM and washed with H2O (2×), 1N aq. NaHSO4 and saturated aq. NaHCO3. The organic layer was dried (Na2SO4), concentrated under reduced pressure and purified by column chromatography (ISCO, eluting with 0→100% DCM/10% MeOH in DCM) to provide the title product (0.5 g, yield: 37%).

Provenance & Evidence