Sodium Bicarbonate → 2,2-Dimethyl-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl)propan-1-ol

HRID 2279836노트

반응식

HRID 2279836 반응식
[CH3:1][C:2]([CH3:26])([CH2:18][O:19]C1CCCCO1)[CH2:3][N:4]1[CH:8]=[C:7]([B:9]2[O:13][C:12]([CH3:15])([CH3:14])[C:11]([CH3:17])([CH3:16])[O:10]2)[CH:6]=[N:5]1.CC1C=CC(S(O)(=O)=O)=CC=1.O.C([O-])(O)=O.[Na+]>CCO>[CH3:1][C:2]([CH3:26])([CH2:3][N:4]1[CH:8]=[C:7]([B:9]2[O:13][C:12]([CH3:15])([CH3:14])[C:11]([CH3:17])([CH3:16])[O:10]2)[CH:6]=[N:5]1)[CH2:18][OH:19]

참가 물질

5

반응물 3

HCID 516892Sodium BicarbonateHCID 521998p-Toluenesulfonic acid monohydrateHCID 866977761-[2,2-dimethyl-3-(tetrahydro-2H-pyran-2-yloxy)propyl]-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole2회

생성물 1

HCID 678124422,2-Dimethyl-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl)propan-1-ol수율 57.2%

시약·촉매·용매 1

HCID 702Ethanol용매

실험 절차

1-[2,2-dimethyl-3-(tetrahydro-2H-pyran-2-yloxy)propyl]-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (Compound 47C, 539 mg, 1.48 mmol) was dissolved in EtOH (2.64 mL) and p-TsOH.H2O (56.3 mg, 0.296 mmol) was added to the reaction mixture. The reaction was left to stir at rt for 16 hrs. Solid NaHCO3 (1.24 g, 14.8 mmol) was added to the reaction mixture and left to stir at rt for an additional 30 min. The reaction mixture was quenched with water and then extracted with EtOAc. The organic layer was washed with sat. NaHCO3 (1×), brine (2×), extracted, dried over sodium sulfate, filtered, concentrated in vacuo and purified using a Teledyne ISCO Combiflash® Rf system [0-30% Acetone/Heptanes] to afford 237 mg of the title compound (57%). MS (ESI): m/z=281.38 [M+H]+. UPLC: tR=1.12 min (UPLC-TOF: polar—2 min).

후처리

  1. waitThe reaction was left
  2. waitleft
  3. stirringto stir at rt for an additional 30 min
  4. customThe reaction mixture was quenched with water
  5. extractionextracted with EtOAc
  6. washThe organic layer was washed with sat. NaHCO3 (1×), brine (2×)
  7. extractionextracted
  8. dry with materialdried over sodium sulfate
  9. filtrationfiltered
  10. concentrationconcentrated in vacuo
  11. custompurified

출처 및 근거

ORD 기록
ord-c3ff203308734cb79352d93160d43f61
출처 데이터셋
uspto-grants-2015_09
특허 번호
US09133224B2

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