Sodium hydride → HCID 68312845, compound

Participants

Reaction Steps

To a suspension of 2-(2-isopropyl-5-methyl-2H-[1,2,4]triazol-3-yl)-4,5-dihydro-6-oxa-1,3a-diazabenzo[e]azulen-8-ol from Example 4 (300 mg, 0.922 mmol) in DMF (3 mL) was added sodium hydride (37 mg, 60% in oil, 0.925 mmol). The mixture was stirred at RT for 15 min, then a solution of 2-bromo-2-phenylmalonic acid diethyl ester (435 mg, 1.38 mmol) in DMF (0.5 mL) was added. The reaction mixture was stirred at RT for 30 min, and then at 90° C. for 2 h. The cooled reaction mixture was partitioned between water and EtOAc. The aqueous phase was extracted with EtOAc and the combined organic layers were washed with water, followed by brine, then dried (Na2SO4) and concentrated in vacuo. The resulting residue was purified by column chromatography (Si-PCC, gradient 2-10% MeOH in DCM) affording the title compound as a colourless gum (0.3933 g, 76%). LCMS (Method J): RT 3.73 min [M+H]+ 560

Provenance & Evidence