Reacción #51159

Ecuación de reacción

methanol

2-chloro-3-nitropyridine

methanol

sodium thiomethoxide

→

2-methylthio-3-nitropyridine

Rendimiento 64.0%

Disolventes

Water

Condiciones de reacción

Tratamiento posterior

1. 1
   Temperaturawhile being cooled with ice
2. 2
   Extracciónthe resulting mixture was extracted with ethyl acetate
3. 3
   LavadoThe organic layer was washed with a saturated aqueous solution of sodium chloride
4. 4
   Secadodried over sodium sulfate
5. 5
   workup.DISTILLATIONSubsequently, the solvent was distilled off
6. 6
   Otrothe resulting crystals were recrystallized from a mixture of an ethyl acetate-hexane mixture

Procedimiento

A methanol (50 ml) solution of 2-chloro-3-nitropyridine (4.30 g, 27.1 mmol) was added dropwise to a methanol (30 ml) solution of sodium thiomethoxide (2.10 g, 28.5 mmol) while being cooled with ice, and the mixed solution was stirred for 17 hours. Water was then added to the reaction mixture, and the resulting mixture was extracted with ethyl acetate. The organic layer was washed with a saturated aqueous solution of sodium chloride, and dried over sodium sulfate. Subsequently, the solvent was distilled off, and the resulting crystals were recrystallized from a mixture of an ethyl acetate-hexane mixture to obtain 2.93 g (yield 64%) of 2-methylthio-3-nitropyridine as a yellow needle crystal.

Fuente