Hydrochloric Acid → HCID 54068405, compound

Participants

Reaction Conditions

Reaction Steps

A mixture composed of 30.9 g (0.1 mol) of phenyl 1-hydroxy-4-nitro-2-naphthoate, 17.2 g of p-aminobenzenesulfonamide and 200 ml of diethylene glycol dimethyl ether was heated at 160° C. for 3 hours. After cooling, the separated yellow crystals were filtered off. Yield: 19 g. 7.74 g (0.02 mol) of the resulting yellow crystals were dissolved in 100 ml of 10% sodium hydroxide. Then 40 g of sodium hydrosulfite was added at 50° to 60° C. thereto. After stirring at the same temperature for 30 minutes, the solution was allowed to cool and neutralized with diluted hydrochloric acid. The resulting light yellow precipitate of (4-a) was filtered off. Yield: 5.3 g

Provenance & Evidence