4,4'-Dimethoxybenzil → HCID 86670229, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 1,2-bis(4-methoxyphenyl)ethane-1,2-dione (200 mg, 0.74 mmol) in ethanol (3 mL) and water (3 mL) was added 3,4-diaminobenzene-1-sulfonic acid (116 mg, 0.62 mmol). The resulting solution was stirred overnight at 100° C. in an oil bath, and then quenched by the addition of water (60 mL), extracted with dichloromethane (3×20 mL), dried over anhydrous magnesium sulfate and concentrated in vacuo to afford 2,3-bis(4-methoxyphenyl)quinoxaline-6-sulfonic acid (95.3 mg, 30.4%).

Provenance & Evidence