The 1,1,1,3,3,3-hexafluoro-2-(4-((2R)-2-(((3S)-3-methyl-4-morpholinyl)methyl)-1-piperazinyl)phenyl)-2-propanol trifluoroacetate (115 mg, 0.172 mmol) was dissolved in CH2Cl2 (30 mL) and was chilled to 0° C. To this solution was triethylamine (96 μl, 0.687 mmol) followed by 6-chloropyridine-3-sulfonyl chloride (40.1 mg, 0.189 mmol, Organic Process Research & Development 2009, 13, 875). The mixture was warmed slowly to room temp and stirred for 2 h. Afterwards, the mixture was concentrated to give 2-(4-((S)-4-((6-chloropyridin-3-yl)sulfonyl)-2-(((R)-3-methylmorpholino)methyl)piperazin-1-yl)phenyl)-1,1,1,3,3,3-hexafluoropropan-2-ol.
