Water → HCID 24753772, compound

Participants

Reaction Steps

2-Isopropyl-7-methylamino-4-(5-methyl-1H-pyrazol-3-ylamino)-2H-phthalazin-1-one (0.4 g, 1.3 mmol) was dissolved in DMF (5 ml). To this was added NaH (60%, 0.1 g, 2.6 mmol) as a suspension in DMF (2 ml). The mixture was stirred at RT for 5 min then methoxyacetyl chloride (0.28 g, 2.6 mmol) was added dropwise and the reaction mixture was stirred at RT for 2 hours. After this time, water (10 ml) was added cautiously, the mixture was extracted with EtOAc (3×10 ml), the organic layers were combined, dried (MgSO4), filtered and concentrated under vacuum. The residue was dissolved in THF (5 ml) and heated to 60° C. in the presence of solid sodium hydroxide (100 mg) for 2 hours. After this time the mixture was concentrated under vacuum and subjected to flash column chromatography (elution: 95% EtOAc, 5% MeOH) to give N-[3-isopropyl-1-(5-methyl-1H-pyrazol-3-ylamino)-4-oxo-3,4-dihydro-phthalazin-6-yl]-2-methoxy-N-methyl-acetamide (0.06 g, 12% yield) as a white solid.

Provenance & Evidence