Triethylamine → (4-(2-Thiophenylsulfonyl)-1-(4-(2,2,2-trifluoro-1-hydroxy-1-methylethyl)phenyl)-2-piperazinyl)methyl methanesulfonate

Participants

Reaction Conditions

Reaction Steps

A 25-mL round bottomed flask was charged with 1,1,1-trifluoro-2-(4-(2-(hydroxymethyl)-4-(2-thiophenylsulfonyl)-1-piperazinyl)phenyl)-2-propanol (400 mg, 0.888 mmol, Example 44), triethylamine (136 μL, 0.977 mmol) and CH2Cl2 (5 mL). After cooling to 0° C., methanesulfonyl chloride (69.2 μL, 0.888 mmol) was slowly added via syringe. The reaction was then warmed to room temperature and stirred for 3 h. After this time, the mixture was concentrated and the crude material was purified by column chromatography (12 g silica gel, 5%-80% (10% MeOH—CH2Cl2) in CH2Cl2) to give (4-(2-thiophenylsulfonyl)-1-(4-(2,2,2-trifluoro-1-hydroxy-1-methylethyl)phenyl)-2-piperazinyl)methyl methanesulfonate (403 mg) as a colorless foam.

Provenance & Evidence