Water → HCID 10810245, compound

Participants

Reaction Steps

To a stirred, cooled (-20° C.) solution of 3,3,3-trifluoro-2-hydroxy-2-methylpropanoic acid (0.72 g, 4.5 mmol) in N,N-dimethylacetamide (10 mL) was added thionyl chloride (0.54 g, 4.5 mmol) and the mixture stirred at -10° to -15° C. for 1 hour. 3-Methyl-4-(phenylsulfonyl)-benzeneamine (0.75 g, 3.0 mmol) was added in one portion and the reaction mixture stirred at room temperature overnight. The mixture was poured into water and the aqueous solution filtered to yield a brown solid which was purified by flash column chromatography (5% v/v ethyl acetate/methylene chloride). Trituration of the resulting solid with hexane yielded the title propanamide as a white solid (0.95 g, 82%); mp 141°-143° C. 1H-NMR (300 MHz, d6-DMSO): 1.58 (s, 3H, CH3) 2.32 (s, 3H, ArCH3) 7.55-7.70 (m, 4H, aromatic) 7.79-7.85 (m, 3H, aromatic) 7.92 (dd, 1H, J=8.8, 1.9 Hz, aromatic) 8.10 (d, 1H, J=8.8 Hz, aromatic) 10.30 (s, 1H, NH). MS (CI, CH4): 388 (M+1). Analysis for C17H16F3NO4S: Calculated: C, 52.71; H, 4.16; N, 3.62. Found: C, 52.59; H, 4.24; N, 3.59.

Provenance & Evidence