Ethanolamine → N-(2-hydroxy-ethyl)-2-[2-(4-trifluoromethyl-phenoxymethyl)-1H-benzoimidazol-5-yl]-benzamide

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Reaction Steps

A mixture of 2-[2-(4-trifluoromethyl-phenoxymethyl)-1H-benzoimidazol-5-yl]-benzoic acid (0.050 g, 0.121 mmol), BOP (0.059 g, 0.133 mmol), DIPEA (0.07 mL, 0.363 mmol) and ethanolamine (0.011 g, 0.182 mmol) in DMF (0.5 mL) was stirred at rt for 12 hours. The crude product was purified by chromatography (silica, CH2Cl2: MeOH, 5:1) to afford the title compound as a brown oil (0.043 g, 78%). 1H NMR (400 MHz, CD3OD) δ (ppm): 7.64-7.59 (m, 3H), 7.54-7.46 (m, 4H), 7.41 (td, 1H, J=8.2 Hz, J=1.6 Hz), 7.35 (dd, 1H, J=8.0 Hz, J=1.6 Hz), 7.15 (d, 2H, J=8.0 Hz), 5.42 (s, 2H), 5.24 (s, 1H), 3.91 (t, 2H, J=6.0 Hz), 3.24 (t, 2H, J=6.2 Hz). Mass Spectrum (LCMS, ESI pos.) Calcd. For C24H21F3N3O3: 456.4 (M+H), Found 456.2.

Provenance & Evidence