Diisopropylethylamine → HCID 59489531, compound

Participants

Reaction Steps

To a solution of 2-{1-[2-(4-fluoro-phenyl)-ethyl]-5-methyl-1H-pyrazol-3-yl}-4-methyl-thiazole-5-carboxylic acid (0.15 g, 0.43 mmol) in methylene chloride (10 mL) was added 2-pyridin-3-yl-ethylamine (0.05 g, 0.48 mmol), benzotriazol-1-yloxytris-(dimethylamino)phosphonium hexafluorophosphate (0.21 g, 0.48 mmol) and N,N-diisopropylethylamine (0.15 mL, 0.87 mmol). The reaction mixture was stirred under nitrogen at room temperature for 16 hr. The reaction mixture was diluted with methylene chloride (50 mL), washed with water (50 mL) and brine (2×50 mL). The organic phase was dried (Na2SO4) and evaporated. The residue was purified by preparative thin layer chromatography over silica gel (methylene chloride:methanol, 98:2) to provide 2-{1-[2-(4-fluoro-phenyl)-ethyl]-5-methyl-1H-pyrazol-3-yl}-4-methyl-thiazole-5-carboxylic acid (pyridin-3-ylmethyl-amide as a white solid (0.052 g, 29% yield). 1H NMR (400 MHz, CDCl3) δ 8.62 (s, 1H), 8.57 (d, J=4 Hz, 1H), 7.73 (d, J=4 Hz, 1H), 7.27-7.32 (m, 1H), 6.90-6.99 (m, 4H), 6.49 (s, 1H), 6.05-6.11 (bm, 1H), 4.64 (d, J=4 Hz, 2H), 4.23 (t, J=7 Hz, 2H), 3.13 (t, J=7 Hz, 2H), 2.76 (s, 3H), 1.56 (s, 3H); MS (M+H)+=435.9; Rt=1.31 min; HRMS (M+H)+=436.16.

Provenance & Evidence