反应详情

温度

80 °C

A solution of 600 mg (2.2 mmol) of 3-trifluoromethyl-4-(2-(S)-methylpropyloxy)benzoic acid (from Step B), 542 mg (2.2 mmol) of EDC and 357 mg (2.2 mmol) of HOBT in 6 mL of DMF were stirred at rt for 1 h. The reaction was subsequently treated with 350 mg (2.2 mmol) of N-hydroxy-4-(hydroxymethyl)benzamidine (from Aldehyde 1, Step A) and heated to 80° C. for 12 h. The reaction mixture was cooled and purified via chromatography on a Biotage 40M cartridge using 2:1 v/v hexanes/EtOAc as the eluant affording 510 mg of the title compound: 1H NMR (500 MHz) δ 1.01 (t, J=7.3, 3H), 1.38 (d, J=5.9, 3H), 1.73–1.83 (m, 2H), 4.55 (septet, 1H), 4.79 (s, 2H), 7.12 (d, J=8.9, 1H), 7.51 (d, J=8.2, 2H), 8.15 (d, J=8.2, 2H), 8.30 (d, J=8.9, 1H), 8.43 (s, 1H).

1. temperatureThe reaction mixture was cooled
2. custompurified via chromatography on a Biotage 40M cartridge