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Benzyl Bromide → (R)-tert-Butyl 1-(1-benzyl-3-(2,5-difluorophenyl)-1H-1,2,4-triazol-5-yl)-2,2-dimethylpropylcarbamate

HRID 1037481
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HRID 1037481 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+].[CH2:33](Br)[C:34]1[CH:39]=[CH:38][CH:37]=[CH:36][CH:35]=1>CN(C=O)C>[CH2:33]([N:11]1[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:13][C:9]([C:3]2[CH:4]=[C:5]([F:8])[CH:6]=[CH:7][C:2]=2[F:1])=[N:10]1)[C:34]1[CH:39]=[CH:38][CH:37]=[CH:36][CH:35]=1
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참가 물질

5

반응물 3

HCID 7498Benzyl BromideHCID 10796Cesium carbonateHCID 59781125(R)-tert-butyl 1-(3-(2,5-difluorophenyl)-1H-1,2,4-triazol-5-yl)-2,2-dimethylpropylcarbamate

생성물 1

HCID 59781123(R)-tert-Butyl 1-(1-benzyl-3-(2,5-difluorophenyl)-1H-1,2,4-triazol-5-yl)-2,2-dimethylpropylcarbamate

시약·촉매·용매 1

HCID 6228Dimethylformamide용매

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 benzyl bromide (2.11 mL, 17.7 mmol). Once 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-(1-benzyl-3-(2,5-difluorophenyl)-1H-1,2,4-triazol-5-yl)-2,2-dimethylpropyl-carbamate. The desired regioisomer was obtained on silica gel column (0% to 100% EtOAc in Hexanes, 3.25 g, 44.3%). The structure was verified by 1H NMR nOe experiments.

후처리

  1. customOnce the organic layer was separated
  2. washwashed with H2O, brine
  3. dry with materialdried over Na2SO4
  4. filtrationfiltered
  5. customevaporated in vacuo

출처 및 근거

ORD 기록
ord-7ccb3a391ddd4768bffc9786a6edc212
출처 데이터셋
uspto-grants-2013_10
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08546434B2

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