Potassium Carbonate → (S)-tert-butyl 4-(3-(4-bromo-2-fluorophenoxy)-2-oxopyrrolidin-1-yl)piperidine-1-carboxylate

HRID 407879노트

반응식

HRID 407879 반응식
CS([O:5][C@@H:6]1[CH2:10][CH2:9][N:8]([CH:11]2[CH2:16][CH2:15][N:14]([C:17]([O:19][C:20]([CH3:23])([CH3:22])[CH3:21])=[O:18])[CH2:13][CH2:12]2)[C:7]1=[O:24])(=O)=O.[Br:25][C:26]1[CH:31]=[CH:30][C:29](O)=[C:28]([F:33])[CH:27]=1.C([O-])([O-])=O.[K+].[K+]>CS(C)=O>[Br:25][C:26]1[CH:31]=[CH:30][C:29]([O:5][C@H:6]2[CH2:10][CH2:9][N:8]([CH:11]3[CH2:16][CH2:15][N:14]([C:17]([O:19][C:20]([CH3:23])([CH3:22])[CH3:21])=[O:18])[CH2:13][CH2:12]3)[C:7]2=[O:24])=[C:28]([F:33])[CH:27]=1

참가 물질

5

반응물 3

HCID 11430Potassium CarbonateHCID 27249814-Bromo-2-fluorophenolHCID 86688072(R)-tert-butyl 4-(3-(methylsulfonyloxy)-2-oxopyrrolidin-1-yl)piperidine-1-carboxylate

생성물 1

HCID 86688077(S)-tert-butyl 4-(3-(4-bromo-2-fluorophenoxy)-2-oxopyrrolidin-1-yl)piperidine-1-carboxylate수율 84%

시약·촉매·용매 1

HCID 679Dimethyl Sulfoxide용매

반응 조건

온도
70 °C

실험 절차

(R)-tert-Butyl 4-(3-(methylsulfonyloxy)-2-oxopyrrolidin-1-yl)piperidine-1-carboxylate (Preparation D; 1.7 g, 4.7 mmol) was dissolved in dry DMSO (30 mL) and 4-bromo-2-fluorophenol (1.1 g, 5.6 mmol) and K2CO3 (0.78 g, 5.6 mmol) was added and the reaction heated to 70° C. under nitrogen. The reaction became purple then black. The reaction was cooled to ambient temperature after 3 hours and partitioned between water and EtOAc, extracted with EtOAc, washed with brine, dried over Na2SO4, filtered and concentrated. The residue was purified over silica gel (40% EtOAc in hexanes) to afford (S)-tert-butyl 4-(3-(4-bromo-2-fluorophenoxy)-2-oxopyrrolidin-1-yl)piperidine-1-carboxylate (1.8 g, 3.9 mmol, 84% yield) as a white solid.

후처리

  1. temperatureThe reaction was cooled to ambient temperature after 3 hours
  2. custompartitioned between water and EtOAc
  3. extractionextracted with EtOAc
  4. washwashed with brine
  5. dry with materialdried over Na2SO4
  6. filtrationfiltered
  7. concentrationconcentrated
  8. customThe residue was purified over silica gel (40% EtOAc in hexanes)

출처 및 근거

ORD 기록
ord-7f141bf48955487790f07a31bf7c3e3f
출처 데이터셋
uspto-grants-2014_06
특허 번호
US08754226B2

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