Hydrochloric Acid → HCID 58072397, compound

Participants

Reaction Steps

A solution of 3-[3-(dimethylamino)prop-2-enoyl]-1-[3-(trifluoromethyl)phenyl]pyridazin-4(1H)-one (0.675 g, 2.0 mmol), benzylhydrazine dihydrochloride (1.56 g, 8.0 mmol), and Et3N (2.23 mL, 16 mmol) in MeOH (20 mL) was refluxed for 3 h. After cooling to room temperature, the reaction mixture was poured into 1 M HCl aqueous solution and extracted with AcOEt. The extract was washed with brine, dried over MgSO4, and concentrated under reduced pressure. The residue was recrystallized from hexane/AcOEt to give the title compound (375 mg, 47% yield) as a white solid: mp 156-157° C.; 1H NMR (300 MHz, CDCl3): δ ppm 5.75 (2H, s), 6.70 (1H, d, J=7.9 Hz), 6.84-6.91 (2H, m), 7.18-7.24 (3H, m), 7.32-7.37 (1H, m), 7.47-7.53 (2H, m), 7.64-7.67 (2H, m), 7.70 (1H, d, J=1.9 Hz), 8.15 (1H, d, J=7.9 Hz). Anal. Calcd for C21H15F3N4O: C, 63.63; H, 3.81; N, 14.14. Found: C, 63.63; H, 3.85; N, 14.16.

Provenance & Evidence