Hydrogen Sulfide → HCID 20387787, compound

Participants

Reaction Steps

Ethyl 2-(2,4-dinitroanilino)-5-ethyl-thiophene-3-carboxylate (0.5 g) in 6 N ammonia (25 ml) and ethanol (10 ml) was stirred at reflux temperature and hydrogen sulphide gas passed in over a period of 2 hours. The reaction mixture was cooled to room temperature and the title compound obtained as a yellow precipitate filtered off, washed with water, and dried in vacuo, m.p. 174°-176° C. (EtOAc).

Provenance & Evidence