Tributylphosphine → 3-(4-(3-t-Butyldimethylsilyloxy-1-azetidinyl)-3-fluorophenyl)-5(R)-(isoxazol-3-yl-oxymethyl)oxazolidin-2-one

HRID 1167431노트

반응식

HRID 1167431 반응식
[Si:1]([O:8][CH:9]1[CH2:12][N:11]([C:13]2[CH:18]=[CH:17][C:16]([N:19]3[CH2:23][C@H:22]([CH2:24][OH:25])[O:21][C:20]3=[O:26])=[CH:15][C:14]=2[F:27])[CH2:10]1)([C:4]([CH3:7])([CH3:6])[CH3:5])([CH3:3])[CH3:2].O[C:29]1[CH:33]=[CH:32][O:31][N:30]=1.C(P(CCCC)CCCC)CCC.N(C(N1CCCCC1)=O)=NC(N1CCCCC1)=O>O1CCCC1>[Si:1]([O:8][CH:9]1[CH2:10][N:11]([C:13]2[CH:18]=[CH:17][C:16]([N:19]3[CH2:23][C@H:22]([CH2:24][O:25][C:29]4[CH:33]=[CH:32][O:31][N:30]=4)[O:21][C:20]3=[O:26])=[CH:15][C:14]=2[F:27])[CH2:12]1)([C:4]([CH3:7])([CH3:5])[CH3:6])([CH3:3])[CH3:2]

참가 물질

6

반응물 4

HCID 13831TributylphosphineHCID 730421,1'-(Azodicarbonyl)dipiperidineHCID 213565963-(4-(3-t-Butyldimethylsilyloxy-1-azetidinyl)-3-fluorophenyl)-5(R)-hydroxymethyloxazolidin-2-oneHCID 178516613HCID 178516613, 화합물

생성물 1

HCID 699815973-(4-(3-t-Butyldimethylsilyloxy-1-azetidinyl)-3-fluorophenyl)-5(R)-(isoxazol-3-yl-oxymethyl)oxazolidin-2-one

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매

실험 절차

3-(4-(3-t-Butyldimethylsilyloxy-1-azetidinyl)-3-fluorophenyl)-5(R)-hydroxymethyloxazolidin-2-one (WO 96/13502; 2.47 g, 6.25 mmol), 3-hydroxyisoxazole (580 mg, 6.86 mmol), and tributylphosphine (1.58 g, 7.8 mmol) were dissolved by stirring in dry tetrahydrofuran (100 ml) under nitrogen. The mixture was cooled in an ice-bath, and 1,1′-(azodicarbonyl)dipiperidine (1.96 g, 7.8 mmol) added dropwise over 10 minutes. The solution was stirred 18 hours, allowing the temperature to rise to ambient. Reduced azo compound was filtered off, and the solution evaporated to dryness and the residue triturated with ether. The residue was purified by chromatography on a silica flash column, eluting with a gradient from 50 to 75% EtOAc in isohexane. Relevant fractions were combined and evaporated to the product as an oil (1.31 g).

후처리

  1. temperatureThe mixture was cooled in an ice-bath
  2. filtrationReduced azo compound was filtered off
  3. customthe solution evaporated to dryness
  4. customthe residue triturated with ether
  5. customThe residue was purified by chromatography on a silica flash column
  6. washeluting with a gradient from 50 to 75% EtOAc in isohexane
  7. customevaporated to the product as an oil (1.31 g)

출처 및 근거

ORD 기록
ord-f888938a6a9e4456a370a053d7a26fed
출처 데이터셋
uspto-grants-2003_09
특허 번호
US06617339B1

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