1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → 2-(4-tert-butyl-3,5-difluorophenoxy)-N-((1R)-1-{3-(hydroxymethyl)-4-[(methylsulfonyl)amino]phenyl}ethyl)acetamide

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Reaction Steps

To a solution of N-[4-[(1R)-1-aminoethyl]-2-(hydroxymethyl)phenyl]methanesulfonamide hydrochloride (40 mg, 0.14 mmol) in N,N-dimethylformamide (DMF) (2 ml), (4-tert-butyl-3,5-difluorophenoxy)acetic acid (34 mg, 0.14 mmol), N-(3-dimethylaminopropyl)-N′-ethylcarbodiimide (40 mg), and 4-dimethylaminopyridine (DMAP) (0.5 mg, 0.004 mmol) were added. The solution was stirred at room temperature for 16 hours and then partitioned between ethyl acetate and water. The organic layer was dried over sodium sulfate, filtered, and evaporated. The residue obtained was purified by silica gel column chromatography, eluting with methylene chloride/ethylacetate (1:1), to give 2-(4-tert-butyl-3,5-difluorophenoxy)-N-((1R)-1-{3-(hydroxymethyl)-4-[(methylsulfonyl)amino]phenyl}ethyl)acetamide (24 mg, 36%).

Provenance & Evidence