HCID 178477676, compound → HCID 178477677, compound

Participants

Reaction Conditions

Reaction Steps

A slurry of 2-ethylsulfonylmethyl-3-carbomethoxyquinoxaline-1,4-dioxide (28.2 g., 0.087 m) and 0.5 N sodium hydroxide (280 ml.) was stirred at room temperature for 30 minutes. It was then filtered and the filtrate acidified to pH 3 with 6N hydrochloric acid. The resulting slurry was heated in an oil bath (bath temperature 120°C.) for 30 minutes. It was removed from the oil bath, allowed to cool to room temperature and the solid filtered off: 22.2 g. (95 percent yield); m.p. 216°C.

Provenance & Evidence