Pyridine → 4,5-dichloro-N-[3,3,3-trifluoro-1-(hydroxymethyl)-2-(trifluoromethyl)propyl]thiophene-2-sulfonamide

Participants

Reaction Conditions

Reaction Steps

A solution of 3,3,3-trifluoro-2-(trifluoromethyl)-1-(hydroxymethyl)propylamine (0.192 g, 0.9 mmol) in THF (1 mL) was stirred under nitrogen at 25° C. Pyridine (0.147 mL, 1.82 mmol) was added followed by 4,5-dichlorothiophene-2-sulfonyl chloride (0.226 g, 0.391 mmol) in THF (1 mL), and the resulting solution stirred for 18 h at 25° C. After concentration, the residue was taken up in EtOAc (15 mL) and washed with 1 N aq. HCl (10 mL), brine (10 mL), and then dried (Na2SO4). After concentration, the crude product was purified by preparatory TLC, eluent: 30:70 EtOAc:hexanes, to provide 4,5-dichloro-N-[3,3,3-trifluoro-1-(hydroxymethyl)-2-(trifluoromethyl)propyl]thiophene-2-sulfonamide as a white solid (0.037 g, 9% yield, racemic mixture). Mass Spectrum (−ESI): 423.9 (M−H)−.

Provenance & Evidence