Acetohydrazide → Acetic acid N'-(2-{4,5-dimethyl-6-[4-(5-trifluoromethyl-pyridin-2-yl)-piperazin-1-yl]-pyridazin-3-yl}-acetyl)-hydrazide

Participants

Reaction Steps

Acetic acid hydrazide (20.6 mg, 0.28 mmol) is added to a round-bottom flask under N2 followed by DMF (5 mL). Diisopropylethylamine (0.25 mL) is added and the reaction is stirred for 30 min. {4,5-Dimethyl-6-[4-(5-trifluoromethyl-pyridin-2-yl)-piperazin-1-yl]-pyridazin-3-yl}-acetic acid (110 mg, 0.28 mmol) is added and the reaction is stirred for 1 h. HOBT (42 mg, 0.311 mmol) and HBTU (116.8 mg, 0.31 mmol) are added and the reaction is allowed to stir for 16 h. The crude reaction mixture is purified via flash chromatography on silica gel (0-30% methanol in dichloromethane) to afford the title compound (114 mg, 90%).

Provenance & Evidence