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Cesium carbonate → (R)-tert-butyl 1-(3-(2,5-difluorophenyl)-1-(3-fluorobenzyl)-1H-1,2,4-triazol-5-yl)-2,2-dimethylpropylcarbamate

HRID 1037488
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HRID 1037488 반응식
[F:1][C:2]1[CH:7]=[CH:6][C:5]([F:8])=[CH:4][C:3]=1[C:9]1[N:13]=[C:12]([C@H:14]([NH:19][C:20](=[O:26])[O:21][C:22]([CH3:25])([CH3:24])[CH3:23])[C:15]([CH3:18])([CH3:17])[CH3:16])[NH:11][N:10]=1.C([O-])([O-])=O.[Cs+].[Cs+].[F:33][C:34]1[CH:35]=[C:36]([CH:39]=[CH:40][CH:41]=1)[CH2:37]Br>CN(C=O)C>[F:1][C:2]1[CH:7]=[CH:6][C:5]([F:8])=[CH:4][C:3]=1[C:9]1[N:13]=[C:12]([C@H:14]([NH:19][C:20](=[O:26])[O:21][C:22]([CH3:25])([CH3:24])[CH3:23])[C:15]([CH3:18])([CH3:17])[CH3:16])[N:11]([CH2:37][C:36]2[CH:39]=[CH:40][CH:41]=[C:34]([F:33])[CH:35]=2)[N:10]=1
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참가 물질

5

반응물 3

HCID 10796Cesium carbonateHCID 680073-Fluorobenzyl bromideHCID 59781125(R)-tert-butyl 1-(3-(2,5-difluorophenyl)-1H-1,2,4-triazol-5-yl)-2,2-dimethylpropylcarbamate

생성물 1

HCID 58473041(R)-tert-butyl 1-(3-(2,5-difluorophenyl)-1-(3-fluorobenzyl)-1H-1,2,4-triazol-5-yl)-2,2-dimethylpropylcarbamate

시약·촉매·용매 1

HCID 6228Dimethylformamide
용매

실험 절차

To a stirred suspension of (R)-tert-butyl 1-(3-(2,5-difluorophenyl)-1H-1,2,4-triazol-5-yl)-2,2-dimethylpropylcarbamate (5.89 g, 16.1 mmol) and Cs2CO3 (10.5 g, 32.2 mmol) in DMF (46 mL, 0.35 M) was added 3-fluorobenzyl bromide (2.17 mL, 17.7 mmol). Once the reaction was complete, the mixture was partitioned between EtOAc and H2O. The organic layer was separated and washed with H2O, brine, then dried over Na2SO4, filtered, and evaporated in vacuo to give (R)-tert-butyl 1-(3-(2,5-difluorophenyl)-1-(3-fluorobenzyl)-1H-1,2,4-triazol-5-yl)-2,2-dimethylpropylcarbamate. The desired less polar regioisomer was obtained by silica gel column (0% to 100% EtOAc in Hexanes, 5.05 g, 66.2%).

후처리

  1. customthe mixture was partitioned between EtOAc and H2O
  2. customThe organic layer was separated
  3. washwashed with H2O, brine
  4. dry with materialdried over Na2SO4
  5. filtrationfiltered
  6. customevaporated in vacuo

출처 및 근거

ORD 기록
ord-1637e2f77e6a4589acdc46cdfb47ee23
출처 데이터셋
uspto-grants-2013_10
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08546434B2

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