Water → HCID 10739955, compound

Participants

Reaction Steps

To a stirred, cooled (-20° C.) solution of 3,3,3-trifluoro-2-hydroxy-2-methylpropanoic acid (1.79 g, 11.3 mmol) in N,N-dimethylacetamide (20 mL) was added thionyl chloride (1.34 g, 11.3 mmol) and the mixture stirred at -10° to -15° C. for 1 hour. 3-Methoxy-4-(4-pyridylsulfonyl)benzeneamine (2.00 g, 7.6 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 through Celite. The Celite was washed with methylene chloride (100 mL), the methylene chloride solution dried (MgSO4) and concentrated in vacuo to an off-white solid. Trituration with ethyl ether yielded the title propanamide as a white solid (1.65 g, 54%); mp 238°-240° C. 1H--NMR (250 MHz, d6--DMSO): 1.58 (s, 3H, CH 3) 3.70 (s, 3H, OCH3) 7.60 (s, 1H, OH) 7.71 (d, 1H, J=4.6 Hz, aromatic) 7.75-7.79 (m, 3H, aromatic) 7.96 (d, 1H, J=8.8 Hz, aromatic) 8.85 (dd, 2 H, J=4.6, 1.1 Hz, aromatic) 10.39 (s, 1H, NH). MS (CI, CH4): 405 (M+1).

Provenance & Evidence