Methanol → HCID 57722728, compound

Participants

Reaction Conditions

Reaction Steps

To a mixture of sodium hydride (95%) (0.70 g, 29 mmol, 2.6 equiv) in benzene (100 mL) at 23° C. under nitrogen was added methanol (2.5 mL, 2.0 g, 62 mmol, 5.4 equiv) dropwise over 10 min. After stirring for an additional 5 min, methyl (2Z)-2-acetyl-3-{3-[(ethoxycarbonyl)amino]-5,6,7,8-tetrahydronaphthalen-2-yl}-3-hydroxyprop-2-enoate (1-4) (4.1 g, 11 mmol, 1 equiv) was added and the resulting mixture was heated at 72° C. for 20 h. The solvent was evaporated under reduced pressure and the solid residue was suspended in water (50 mL) for 30 min followed by 1 N aqueous hydrochloric acid solution (100 mL) for an additional 30 min with stirring. The solid was filtered, washed with water (100 mL) and hexanes (100 mL), and dried to yield 3-acetyl-4-hydroxy-6,7,8,9-tetrahydrobenzo[g]quinolin-2(1H)-one (1-5) as an off-white solid. LRMS m/z (M+H) 258.4 found, 258.1 required.

Provenance & Evidence