Reacción #1350580

Ecuación de reacción

sodium sulfide

2-methyl-4-thiocyanoisophthalonitrile

→

3-Methyl-2,4-dicyanothiophenol

Disolventes

water

methanol

water

Condiciones de reacción

Tratamiento posterior

1. 1
   Extracciónextracted with methyl tert-butyl ether
2. 2
   Extracciónthe thiophenol was extracted with methylene chloride
3. 3
   LavadoThe extract was washed three times with water
4. 4
   Otrothe organic phase was then separated off
5. 5
   Secadodried over sodium sulfate
6. 6
   Concentraciónconcentrated

Procedimiento

At 25-35° C., a solution of 110.5 g (0.85 mol) of 60 percent pure sodium sulfide in 425 ml of water was added dropwise to a solution of 170 g (0.85 mol) of 2-methyl-4-thiocyanoisophthalonitrile in 850 ml of methanol, and the mixture was stirred at room temperature for 3 hours. The mixture was then admixed with 1000 ml of water and extracted with methyl tert-butyl ether. The aqueous phase was acidified to pH 1 using HCl, and the thiophenol was extracted with methylene chloride. The extract was washed three times with water, and the organic phase was then separated off, dried over sodium sulfate and concentrated. Yield: 150 g (99%).

Fuente