Reacción #214518

Ecuación de reacción

2,5-dimethylaniline

sulfuric acid

potasium hydroxide

→

2,5-dimethyl-4-aminobenzenesulfonic acid

Condiciones de reacción

Tratamiento posterior

1. 1
   Temperaturathe mixture was heated at 220° to 230° C. on an oil bath for 5 hours
2. 2
   Temperaturawith heating
3. 3
   FiltraciónAfter filtering the mixture while hot, 1 kg of hydrochloric acid (d=1.18)
4. 4
   workup.ADDITIONwas added to the filtrate
5. 5
   OtroThe crystals thus precipitated
6. 6
   Filtraciónwere collected by filtration
7. 7
   Lavadowashed with 1 l of acetone

Procedimiento

To 121 g of 2,5-dimethylaniline, 100 g of sulfuric acid (d=1.84) was gradually added dropwise and the mixture was heated at 220° to 230° C. on an oil bath for 5 hours. To the reaction mixture, 2 l of an 1 N aqueous potasium hydroxide solution was added and the mixture was stirred with heating. After filtering the mixture while hot, 1 kg of hydrochloric acid (d=1.18) was added to the filtrate. The crystals thus precipitated were collected by filtration and washed with 1 l of acetone.

Fuente