반응 #51159

반응 방정식

methanol

2-chloro-3-nitropyridine

methanol

sodium thiomethoxide

→

2-methylthio-3-nitropyridine

수율 64.0%

용매

Water

반응 조건

후처리

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

실험 절차

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.

출처