Reacción #94184
ord-27ea21a5124942c2a70b5bbe56fabc11
Ecuación de reacción
Reactantes
Reactivos
Ninguno
Disolventes
Condiciones de reacción
Condiciones detalladas
See reaction.notes.procedure_details.
Tratamiento posterior
- 1TemperaturaAfter heating on the steam bath at 70° to 75° C. the solution
- 2Temperaturais cooled
- 3Filtraciónfiltered
- 4Concentraciónconcentrated to small volume
- 5workup.ADDITIONThe solution is diluted with absolute ethanol
- 6Filtraciónfiltered
Procedimiento
To a solution of 13.49 g of 6,6'-[5-nitro-1,3-phenylenebis(carbonylimino)]bis[1,3-naphthalenedisulfonic acid] tetrasodium salt in 200 ml of water at 65° C. is added 6.42 g of sodium sulfide nonahydrate. After heating on the steam bath at 70° to 75° C. the solution is cooled, acidified with acetic acid and filtered. The filtrate is adjusted to pH 6 with 5N sodium hydroxide solution and concentrated to small volume. The solution is diluted with absolute ethanol and filtered to give the title compound.