1-Hydroxybenzotriazole → HCID 178516355, compound

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Reaction Steps

A mixture of 3-(6-phenylpyridin-3-yl)-5-(piperidin-4-yl)-8,9-dihydropyrazolo[1,5-a]pyrido[3,2-e]pyrimidin-6(7H)-one (70 mg, 0.17 mmoL), 1H-1,2,4-triazole-3-carboxylic acid (20.5 mg, 0.18 mmoL), EDC (63 mg, 0.33 mmoL), HOBt (44.6 mg, 0.33 mmoL) and DIEA (172.2 uL, 0.99 mmoL) in DMF (3 mL) was stirred at room temperature for 2 h. Purification with prep-LC provided 5-(1-(4H-1,2,4-triazole-3-carbonyl)piperidin-4-yl)-3-(6-phenylpyridin-3-yl)-8,9-dihydropyrazolo[1,5-a]pyrido[3,2-e]pyrimidin-6(7H)-one: LCMS tR=3.15 Min (10 min run, UV254nm). Mass calculated for, M+ 519.2, observed LC/MS m/z 519.97 (M+H).

Provenance & Evidence