Aspirin → 4-(3-Thioxo-3H-1,2-dithiol-5-yl)phenyl 2-acetoxybenzoate

HRID 18628

반응식

HRID 18628 반응식
[C:1]([O:4][C:5]1[C:6](=[CH:10][CH:11]=[CH:12][CH:13]=1)[C:7]([OH:9])=[O:8])(=[O:3])[CH3:2].OC1C2N=NNC=2C=CC=1.C1CCC(N=C=NC2CCCCC2)CC1.O[C:40]1[CH:45]=[CH:44][C:43]([C:46]2[S:50][S:49][C:48](=[S:51])[CH:47]=2)=[CH:42][CH:41]=1>CN(C)C=O.C(OCC)(=O)C>[C:1]([O:4][C:5]1[CH:13]=[CH:12][CH:11]=[CH:10][C:6]=1[C:7]([O:9][C:40]1[CH:41]=[CH:42][C:43]([C:46]2[S:50][S:49][C:48](=[S:51])[CH:47]=2)=[CH:44][CH:45]=1)=[O:8])(=[O:3])[CH3:2]

참가 물질

7

반응물 4

HCID 2244AspirinHCID 10868DicyclohexylcarbodiimideHCID 3082127Desmethylanethol trithioneHCID 178418300HCID 178418300, 화합물

생성물 1

HCID 117180344-(3-Thioxo-3H-1,2-dithiol-5-yl)phenyl 2-acetoxybenzoate수율 40%

시약·촉매·용매 2

HCID 6228Dimethylformamide용매HCID 8857Ethyl Acetate용매

반응 조건

온도
0 °C

실험 절차

To the solution of 1 (acetylsalicylic acid, 416 mg, 2.31 mmol) in 40 mL of dimethylformamide, hydroxybenzotriazole (343 mg, 2.54 mmol) and DCC (523 mg, 2.54 mmol) were added with stirring at 0° C. for 1 h. To the reaction mixture 5-p-hydroxyphenyl-1,2-dithiole-3-thione (2; 574 mg, 2.54 mmol) was added and stirred for 1 h at 0° C. and 3 h at room temperature. After filtration, the filtrate was evaporated under reduced pressure to remove the solvent. The oily residue thus obtained was dissolved in ethyl acetate; the organic layer was washed with brine, dried on anhydrous MgSO4, filtered and the solvent evaporated. The crude product was loaded on a silica gel open column and eluted with ethyl ether/petroleum ether (1/1), from which 4-(5-thioxo-5H-1,2-dithiol-3-yl)phenyl 2-acetoxybenzoate (3) was obtained (354 mg, 40% yield).

후처리

  1. stirringstirred for 1 h at 0° C. and 3 h at room temperature
  2. filtrationAfter filtration
  3. customthe filtrate was evaporated under reduced pressure
  4. customto remove the solvent
  5. customThe oily residue thus obtained
  6. washthe organic layer was washed with brine
  7. dry with materialdried on anhydrous MgSO4
  8. filtrationfiltered
  9. customthe solvent evaporated
  10. washeluted with ethyl ether/petroleum ether (1/1), from which 4-(5-thioxo-5H-1,2-dithiol-3-yl)phenyl 2-acetoxybenzoate (3)
  11. customwas obtained (354 mg, 40% yield)

출처 및 근거

ORD 기록
ord-0784ea4004a047fb97965e31f554cde6
출처 데이터셋
uspto-grants-2010_06
특허 번호
US07741359B2

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