Hydrochloric Acid → HCID 57671884, compound

Participants

Reaction Conditions

Reaction Steps

Lithium aluminium hydride (753 mg, 19.8 mmol) was suspended in anhydrous tetrahydrofuran (60 mL) under nitrogen atmosphere. An anhydrous tetrahydrofuran solution (20 mL) of 8-methoxycarbonyl-7-(2-methoxy-4-methoxymethoxyphenyl)-3,3-dimethyl-3,4-dihydro-1H-quinoxalin-2-one (Reference Compound No. 8-7, 4.87 g, 12.2 mmol) was added dropwise thereto at −10° C., and stirred for 40 minutes at the same temperature. After ethyl acetate (10 mL), water (10 mL), and 2N aqueous hydrochloride solution (15 mL) were added to the reaction mixture successively, ethyl acetate (300 mL) were added thereto. Water (300 mL) was added and the whole was partitioned. The organic layer was washed with saturated brine (400 mL), dried over anhydrous magnesium sulfate, and then the solvent was removed under reduced pressure. The obtained residue was purified by silica gel column chromatography (hexane-ethyl acetate) to give the titled reference compound (1.86 g) as a yellow solid. (Yield 41%)

Provenance & Evidence