Hydrochloric Acid → HCID 10823051, compound

Participants

Reaction Steps

A mixture of 1,2-diamino4-chloro-5-ethylbenzene (2.70 g, ca 13 mmol), oxalic acid (1.65 g, 18.3 mmol) and 4M hydrochloric acid (66 ml) was heated at reflux for 4.6 h, cooled, and the grey solid collected by filtration and washed with water. The solid was dried under reduced pressure at 50° C. to afford 1,4-dihydro-6-chloro-7-ethylquinoxalin-2,3-dione (2.34 g, 80%), mp>315° C.

Provenance & Evidence