(Diethylamino)sulfur trifluoride → (4R,9aR)-6-Fluoromethyl-4-methyl-3,4,9,9a-tetrahydro-1H-2,4a,5-triaza-fluorene-2-carboxylic acid tert-butyl ester

HRID 11945

반응식

HRID 11945 반응식
C(N(S(F)(F)[F:7])CC)C.[C:10]([O:14][C:15]([N:17]1[CH2:29][C@@H:28]([CH3:30])[N:27]2[C@H:19]([CH2:20][C:21]3[C:26]2=[N:25][C:24]([CH2:31]OCCO)=[CH:23][CH:22]=3)[CH2:18]1)=[O:16])([CH3:13])([CH3:12])[CH3:11]>ClCCl>[C:10]([O:14][C:15]([N:17]1[CH2:29][C@@H:28]([CH3:30])[N:27]2[C@H:19]([CH2:20][C:21]3[C:26]2=[N:25][C:24]([CH2:31][F:7])=[CH:23][CH:22]=3)[CH2:18]1)=[O:16])([CH3:13])([CH3:12])[CH3:11]

참가 물질

4

실험 절차

A solution of 82.0 μl (0.11 g, 0.63 mmol) diethylaminosulphur trifluoride in 2 ml dichloromethane was cooled to −78 deg C. and treated with a solution of 0.20 g (0.63 mmol) (4R,9aR)-6-(2-hydroxy-ethoxymethyl)-4-methyl-3,4,9,9a-tetrahydro-1H-2,4a,5-triaza-fluorene-2-carboxylic acid tert-butyl ester (Example 15, intermediate b) in 2 ml dichloromethane. The cooling bath was removed and the reaction stirred for 1 h at room temperature. The solution was extracted with 10% aqueous sodium bicarbonate solution, washed with brine, dried over magnesium sulfate, filtered and evaporated. The residue was chromatographed on silica gel (0.032–0.063 mm) with ethyl acetate:n-hexane (1:2) as eluant to afford the desired compound as a colorless oil (51.7%).

후처리

  1. customThe cooling bath was removed
  2. extractionThe solution was extracted with 10% aqueous sodium bicarbonate solution
  3. washwashed with brine
  4. dry with materialdried over magnesium sulfate
  5. filtrationfiltered
  6. customevaporated
  7. customThe residue was chromatographed on silica gel (0.032–0.063 mm) with ethyl acetate:n-hexane (1:2) as eluant

출처 및 근거

ORD 기록
ord-02cf394ff1174a2c8c2dd1ba46ed3904
출처 데이터셋
uspto-grants-2006_08
특허 번호
US07098337B2

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