Methanol → HCID 58669768, compound

Participants

Reaction Conditions

Reaction Steps

A solution of ethyl-4-acetyl-1-(4-ethoxyphenyl)-2,5-dimethyl-1H-pyrrole-3-carboxylate (prepared as in EXAMPLE 85) (70 mg, 0.20 mmol) and MeOH (5 mL) in a resealable reaction vessel was mixed with methylhydrazine (0.032 mL, 0.60 mmol) and AcOH (˜3 drops). The vessel was sealed and heated at 70° C. for 12 h. The resulting slurry was allowed to cool to rt and poured into ice water (50 mL). The resulting white solid was filtered and dried under vacuum for 8 h to give 6-(4-ethoxyphenyl)-2,4,5,7-tetramethyl-2,6-dihydro-1H-pyrrolo[3,4-d]pyridazin-1-one: 1H NMR (CDCl3, 500 MHz) δ 7.00-7.26 (m, 4H), 4.10 (q, 2H), 3.71 (s, 3H), 2.49 (s, 3H), 2.45 (s, 3H), 2.30 (s, 3H), 1.48 (t, 3H); MS (ESI) 312 (M+H)+.

Provenance & Evidence