반응 #474880

반응 방정식

3-chloroperbenzoic acid

triethylamine

phenyl chloroformate

1-Amino-3-methylthiobenzene

sodium thiosulfate

→

title compound

수율 87.4%

Phenyl-3-methylsulfonylphenylcarbamate

수율 87.4%

용매

water

ethyl acetate

tetrahydrofuran

반응 조건

후처리

1. 1
   세척the organic layer was washed with saturated saline
2. 2
   건조dried over anhydrous sodium sulfate
3. 3
   workup.DISTILLATIONAfter distilling off the solvent
4. 4
   기타drying under reduced pressure
5. 5
   workup.DISSOLUTIONthe residue was dissolved in dichloromethane (50 ml)
6. 6
   온도while cooling in an ice water bath
7. 7
   여과the insoluble portion was filtered off
8. 8
   추출extraction with ethyl acetate
9. 9
   세척by washing with an aqueous saturated solution of sodium carbonate
10. 10
    건조drying over anhydrous sodium sulfate
11. 11
    workup.DISTILLATIONThe solvent was distilled off
12. 12
    기타the residue was purified by silica gel column chromatography (ethyl acetate-hexane=1:1)

실험 절차

1-Amino-3-methylthiobenzene (1.27 ml, 10 mmol) was dissolved in tetrahydrofuran (10 ml), and then triethylamine (1.46 ml, 10.5 mmol) and phenyl chloroformate (1.32 ml, 10.5 mmol) were added dropwise in that order at room temperature under a nitrogen atmosphere and the mixture was stirred overnight. The reaction solution was distributed between ethyl acetate and water, and the organic layer was washed with saturated saline and dried over anhydrous sodium sulfate. After distilling off the solvent and drying under reduced pressure, the residue was dissolved in dichloromethane (50 ml), and 3-chloroperbenzoic acid (4.93 g, 20 mmol) was gradually added while cooling in an ice water bath. An aqueous saturated solution of sodium thiosulfate was added to the reaction solution, and then the insoluble portion was filtered off, and extraction with ethyl acetate was followed by washing with an aqueous saturated solution of sodium carbonate and drying over anhydrous sodium sulfate. The solvent was distilled off, and the residue was purified by silica gel column chromatography (ethyl acetate-hexane=1:1) to obtain the title compound (2.545 g, 8.74 mmol, 87.4%) as white crystals.

출처