Thiobenzoic Acid → (2S,4S)-4-benzoylthio-2-(difluoromethyl)thiomethyl-1-(4-nitrobenzyloxycarbonyl)pyrrolidine

HRID 1088953노트

반응식

HRID 1088953 반응식
[F:1][CH:2]([F:24])[S:3][CH2:4][C@@H:5]1[CH2:9][C@@H:8](O)[CH2:7][N:6]1[C:11]([O:13][CH2:14][C:15]1[CH:20]=[CH:19][C:18]([N+:21]([O-:23])=[O:22])=[CH:17][CH:16]=1)=[O:12].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.N(C(OCC)=O)=NC(OCC)=O.[C:56]([SH:64])(=[O:63])[C:57]1[CH:62]=[CH:61][CH:60]=[CH:59][CH:58]=1>O1CCCC1>[C:56]([S:64][C@@H:8]1[CH2:7][N:6]([C:11]([O:13][CH2:14][C:15]2[CH:20]=[CH:19][C:18]([N+:21]([O-:23])=[O:22])=[CH:17][CH:16]=2)=[O:12])[C@H:5]([CH2:4][S:3][CH:2]([F:24])[F:1])[CH2:9]1)(=[O:63])[C:57]1[CH:62]=[CH:61][CH:60]=[CH:59][CH:58]=1

참가 물질

6

반응물 4

HCID 7414Thiobenzoic AcidHCID 11776TriphenylphosphineHCID 220568ethyl N-ethoxycarbonyliminocarbamateHCID 56991440(2S,4R)-2-(difluoromethyl)thiomethyl-4-hydroxy-1-(4-nitrobenzyloxycarbonyl)pyrrolidine

생성물 1

HCID 57295496(2S,4S)-4-benzoylthio-2-(difluoromethyl)thiomethyl-1-(4-nitrobenzyloxycarbonyl)pyrrolidine

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매2회

실험 절차

To a solution of (2S,4R)-2-(difluoromethyl)thiomethyl-4-hydroxy-1-(4-nitrobenzyloxycarbonyl)pyrrolidine (1.01 g) and triphenylphosphine (1.1 g) in tetrahydrofuran (20 ml) was added dropwise a solution of diethyl azodicarboxylate (0.66 ml) in tetrahydrofuran (3 ml) at -10° C. to -5° C. with stirring. The mixture was stirred at the same temperature for 30 minutes. To the solution was added thiobenzoic S-acid (0.49 ml) at the same temperature and the mixture was stirred under ice-cooling for 2 hours. The reaction mixture was concentrated under reduced pressure. The resulting residue was dissolved in ethyl acetate (60 ml). The solution was washed with saturated aqueous sodium hydrogen carbonate and saturated aqueous sodium chloride successively, dried over anhydrous magnesium sulfate, and evaporated in vacuo. The resulting residue was chromatographed on silica gel (100 g) eluting with a mixture of n-hexane and ethyl acetate (3:1, V/V). The fractions containing the desired compound were collected and evaporated in vacuo to give (2S,4S)-4-benzoylthio-2-(difluoromethyl)thiomethyl-1-(4-nitrobenzyloxycarbonyl)pyrrolidine (1.01 g).

후처리

  1. stirringThe mixture was stirred at the same temperature for 30 minutes
  2. stirringthe mixture was stirred under ice-
  3. temperaturecooling for 2 hours
  4. concentrationThe reaction mixture was concentrated under reduced pressure
  5. dissolutionThe resulting residue was dissolved in ethyl acetate (60 ml)
  6. washThe solution was washed with saturated aqueous sodium hydrogen carbonate and saturated aqueous sodium chloride successively
  7. dry with materialdried over anhydrous magnesium sulfate
  8. customevaporated in vacuo
  9. customThe resulting residue was chromatographed on silica gel (100 g)
  10. washeluting with a mixture of n-hexane and ethyl acetate (3:1, V/V)
  11. additionThe fractions containing the desired compound
  12. customwere collected
  13. customevaporated in vacuo

출처 및 근거

ORD 기록
ord-a4427875c04a49b486457b48844ad0e0
출처 데이터셋
uspto-grants-1990_10
특허 번호
US04963543

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