Trifluoroacetic acid → HCID 86670406, compound

Participants

Reaction Steps

A 5-mL vial was charged with tert-butyl (3R)-3-(((1-methylethyl)(methylsulfonyl)amino)methyl)-4-(5-(2,2,2-trifluoro-1-hydroxy-1-(trifluoromethyl)ethyl)-2-pyrimidinyl)-1-piperazinecarboxylate (0.150 g, 0.259 mmol, step 2), TFA (1.0 mL, 13 mmol) and CH2Cl2 (2 mL). The reaction mixture was stirred at room temperature for 30 min and then the volatiles were removed in vacuo. To the resulting residue was added CH2Cl2 (2 mL) followed by TEA (0.40 mL, 2.9 mmol). The mixture was stirred at room temperature for 10 min and then 6-chloropyridine-3-sulfonyl chloride (0.0627 g, 0.296 mmol, Organic Process Research & Development 2009, 13, 875) was added. After 10 min at room temperature, the mixture was concentrated and the crude product was purified by column chromatography (25 g of silica gel, 0 to 50% EtOAc in hexanes) to afford N-(((2R)-4-((6-chloro-3-pyridinyl)sulfonyl)-1-(5-(2,2,2-trifluoro-1-hydroxy-1-(trifluoromethyl)ethyl)-2-pyrimidinyl)-2-piperazinyl)methyl)-N-(1-methylethyl)methanesulfonamide (0.163 g) as a light-yellow solid.

Provenance & Evidence