반응 #366240

반응 방정식

ethyl dithioacetate

sodium fluoride

(S)-(−)-3-[3-fluoro-4-(tetrahydro-1,1-dioxido-2H-thiopyran-4-yl)phenyl]-5-aminomethyl-2-oxazolidinone

potassium hydroxide

ethyl dithioacetate

sodium fluoride

potassium hydroxide

→

title compound

(S)-N-[[3-[3-Fluoro-4-(tetrahydro-1,1-dioxido-2H-thiopyran-4-yl)phenyl]-2-oxo-5-oxazolidinyl]methyl]ethanethioamide

용매

ethanol

ethanol

ethanol

methylene chloride

반응 조건

후처리

1. 1
   workup.ADDITIONwas added
2. 2
   세척washed with water (50 mL), aqueous potassium hydrogen sulfate (1M, 50 mL) and brine (25 mL)
3. 3
   건조dried over anhydrous sodium sulfate
4. 4
   농축concentrated in vacuo
5. 5
   기타The crude product was recrystallized from methylene chloride/diethyl ether

실험 절차

A solution of ethyl dithioacetate (100 mL, 0.876 mmol) and sodium fluoride (37 mg, 0.876 mmol) in ethanol (8.8 mL) under a nitrogen atmosphere was treated with a mixture of (S)-(−)-3-[3-fluoro-4-(tetrahydro-1,1-dioxido-2H-thiopyran-4-yl)phenyl]-5-aminomethyl-2-oxazolidinone, as prepared in Step 1, (300 mg, 0.876 mmol) and aqueous potassium hydroxide (1 M, 0.88 mL) in ethanol (43.8 mL). The resulting mixture was stirred at ambient temperature for 26 hours, during which additional ethyl dithioacetate (50 mL, 0.438 mmol), sodium fluoride (19 mg, 0.438 mmol), aqueous potassium hydroxide (1M, 0.44 mL) and ethanol (3.0 mL) was added, and was then diluted with methylene chloride (150 mL), washed with water (50 mL), aqueous potassium hydrogen sulfate (1M, 50 mL) and brine (25 mL), dried over anhydrous sodium sulfate and concentrated in vacuo. The crude product was recrystallized from methylene chloride/diethyl ether to give the title compound, mp 186-187° C. (dec.).

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