Diisopropylethylamine → 3-Benzyloxy-5-isopropoxy-N-(5-methyl-1-pyridine-2-ylmethyl-1H-pyrazole-3-yl)-benzamide

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Reaction Steps

3-Benzyloxy-5-isopropoxy-benzoic acid (0.35 mmol) is dissolved in acetonitrile, di-isopropyl ethyl amine (3 eq.), benzotriazole-1-yl-oxy-tris-(dimethylamino)-phosphonium (1.2 eq.) and 5-methyl-1-pyridine-2-ylmethyl-1H-pyrazole-3-ylamine (1.0 eq., prepared similar to 1-pyridine-2-ylmethyl-1H-pyrazole-3-ylamine) is added and stirred at RT for 14 hours. The solvent is removed in vacuo. 3-Benzyloxy-5-isopropoxy-N-(5-methyl-1-pyridine-2-ylmethyl-1H-pyrazole-3-yl)-benzamide is obtained after column chromatography (chloroform (methanol) as a colourless powder in a yield of 31%; HPLC (Method B): 3.25 min; LC-MS: 2.350 min, 457.15 (M÷H+);

Provenance & Evidence