N-Fluorobenzenesulfonimide → HCID 67490908, 화합물

HRID 1917335노트

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HRID 1917335 반응식
[C:1]([O:5][C:6]([C@@:8]1([CH2:22][CH2:23][CH2:24][O:25][Si:26]([C:29]([CH3:32])([CH3:31])[CH3:30])([CH3:28])[CH3:27])[CH2:12][C:11](=[O:13])[N:10]([C@@H:14]([C:16]2[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=2)[CH3:15])[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].C[Si](C)(C)[N-][Si](C)(C)C.[Li+].C1C=CC(S(N(S(C2C=CC=CC=2)(=O)=O)[F:53])(=O)=O)=CC=1>O1CCCC1>[C:1]([O:5][C:6]([C@@:8]1([CH2:22][CH2:23][CH2:24][O:25][Si:26]([C:29]([CH3:31])([CH3:30])[CH3:32])([CH3:28])[CH3:27])[CH:12]([F:53])[C:11](=[O:13])[N:10]([C@@H:14]([C:16]2[CH:17]=[CH:18][CH:19]=[CH:20][CH:21]=2)[CH3:15])[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2]

참가 물질

5

반응물 3

HCID 588007N-FluorobenzenesulfonimideHCID 2733832Lithium HexamethyldisilazideHCID 67490948(3S)-3-[3-(tert-Butyldimethylsilyloxy)-1-propyl]-5-oxo-1-[(1R)-1-phenylethyl]pyrrolidine-3-carboxylic acid tert-butyl ester

생성물 1

HCID 67490908HCID 67490908, 화합물수율 26.1%

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매2회

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온도
-5 °C

실험 절차

(3S)-3-[3-(tert-Butyldimethylsilyloxy)-1-propyl]-5-oxo-1-[(1R)-1-phenylethyl]pyrrolidine-3-carboxylic acid tert-butyl ester (30 g) was dissolved in tetrahydrofuran (280 mL), and the atmosphere was replaced with argon. Then, lithium hexamethyldisilazide (1.0 M solution in tetrahydrofuran) (78.0 mL) was added dropwise at −15° C., and the mixture was stirred at −5° C. for 30 minutes. After cooling to −15° C. again, a solution of N-fluorobenzenesulfonimide (26.6 g) in tetrahydrofuran (220 mL) was added dropwise, and the mixture was stirred at room temperature for 17 hours. The reaction solution was extracted with a 10% citric acid solution and ethyl acetate. Then, the organic layer was washed with brine, dried over anhydrous sodium sulfate, and filtered. Thereafter, the solvent was evaporated under reduced pressure. The residue was subjected to silica gel column chromatography (hexane:ethyl acetate=9:1→8:2) to give 8.15 g of the title compound as a pale yellow solid.

후처리

  1. temperatureAfter cooling to −15° C. again
  2. stirringthe mixture was stirred at room temperature for 17 hours
  3. extractionThe reaction solution was extracted with a 10% citric acid solution and ethyl acetate
  4. washThen, the organic layer was washed with brine
  5. dry with materialdried over anhydrous sodium sulfate
  6. filtrationfiltered
  7. customThereafter, the solvent was evaporated under reduced pressure

출처 및 근거

ORD 기록
ord-2d016a5792be470784f6f06bfec2d708
출처 데이터셋
uspto-grants-2013_12
특허 번호
US08618094B2

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