Dimethylformamide → HCID 58617278, compound

Participants

Reaction Conditions

Reaction Steps

4-Fluoro-3-trifluoromethylphenylacetic acid (164 mg, 0.74 mmol) was dissolved in dichloromethane and cooled to 0° C. Oxalyl chloride (64 μL, 0.74 mmol) was added, then after 5 min., N,N-dimethylformamide (5.7 μL, 0.07 mmol) was added. The reaction stirred at 0° C. for 30 min. and room temperature for 1 h. The solution was added slowly to a mixture of 12 (210 mg, 0.43 mmol) and triethylamine (182 μL, 1.30 mmol) in dichloromethane at −78° C. This stirred for 30 min., then was washed with saturated aqueous sodium bicarbonate and brine. It was dried over magnesium sulfate, filtered, and concentrated in vacuo. Purified by reverse-phase HPLC to yield 256 mg of a colorless solid, 11. MS (ESI+): m/z=715.2 [M+H]+. 1H NMR (500 MHz; CDCl3; T=298 K): δ 9.10-8.95 (m, 1H), 8.66-8.58 (m, 1H), 7.78-7.57 (m, 1H), 7.47-7.36 (m, 3H), 7.24 (m, 1H), 7.13 (m, 3H), 5.03 (q, 1H, J=7.4 Hz), 4.43 (quint, 2H, J=8.0 Hz), 3.77 (s, 1H), 3.71 (m, 1H), 3.62-3.49 (m, 2H), 3.23-3.09 (m, 3H), 2.81 (d, 1H, J=12.9 Hz), 2.62-2.41 (m, 1H), 2.14-1.90 (m, 2H), 1.68 (broad s, 2H), 1.64-1.45 (m, 3H) ppm.

Provenance & Evidence