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Imidazole → (3aR,4S,5R,6aS)-4-(((tert-Butyldimethylsilyl)oxy)methyl)-2-oxohexahydro-2H-cyclopenta[b]furan-5-yl benzoate

HRID 371445
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HRID 371445 반응식
[OH:1][CH2:2][C@H:3]1[C@H:10]([O:11][C:12](=[O:19])[C:13]2[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=2)[CH2:9][C@H:8]2[C@@H:4]1[CH2:5][C:6](=[O:20])[O:7]2.N1C=CN=C1.[Si:26](Cl)([C:29]([CH3:32])([CH3:31])[CH3:30])([CH3:28])[CH3:27]>CN(C)C=O>[Si:26]([O:1][CH2:2][C@H:3]1[C@H:10]([O:11][C:12](=[O:19])[C:13]2[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=2)[CH2:9][C@H:8]2[C@@H:4]1[CH2:5][C:6](=[O:20])[O:7]2)([C:29]([CH3:32])([CH3:31])[CH3:30])([CH3:28])[CH3:27]
참가 물질실험 절차후처리출처 및 근거반응 노트

참가 물질

5

반응물 3

HCID 795ImidazoleHCID 28928tert-Butyldimethylsilyl chlorideHCID 2724454(3aR,4S,5R,6aS)-5-(Benzoyloxy)hexahydro-4-(hydroxymethyl)-2H-cyclopenta[b]furan-2-one

생성물 1

HCID 2724503(3aR,4S,5R,6aS)-4-(((tert-Butyldimethylsilyl)oxy)methyl)-2-oxohexahydro-2H-cyclopenta[b]furan-5-yl benzoate수율 97.9%

시약·촉매·용매 1

HCID 6228
Dimethylformamide
용매

실험 절차

A solution of 11.052 g of (1S,5R,6S,7R)-6-hydroxymethyl-7-benzoyloxy-2-oxabicyclo[3.3.0]octan-3-one (DOS No. 2,610,718) in 54.0 ml of absolute dimethylformamide is combined with 3.03 g of imidazole and 6.63 g of tert-butyldimethylsilyl chloride, and the mixture is stirred for 3 hours at room temperature. The solution is subsequently precipitated into 500 ml of ice water, the precipitate is suctioned off, and the residue is dissolved in methylene chloride. The organic solution is dried over magnesium sulfate and concentrated. The crude product is recrystallized from hexane, thus obtaining 15.30 g of the title compound, mp 75.8° C.

후처리

  1. customThe solution is subsequently precipitated into 500 ml of ice water
  2. dissolutionthe residue is dissolved in methylene chloride
  3. dry with materialThe organic solution is dried over magnesium sulfate
  4. concentrationconcentrated
  5. customThe crude product is recrystallized from hexane

출처 및 근거

ORD 기록
ord-cf8b1d4b715f41c8a02044bb836df9bf
출처 데이터셋
uspto-grants-1985_07
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US04532236

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