Potassium Carbonate → ethyl 6-bromo-1-(oxetan-3-yl)-1H-pyrazolo[3,4-b]pyridine-4-carboxylate

HRID 1909230노트

반응식

HRID 1909230 반응식
[Br:1][C:2]1[CH:3]=[C:4]([C:11]([O:13][CH2:14][CH3:15])=[O:12])[C:5]2[CH:10]=[N:9][NH:8][C:6]=2[N:7]=1.C([O-])([O-])=O.[K+].[K+].Br[CH:23]1[CH2:26][O:25][CH2:24]1>C(#N)C>[Br:1][C:2]1[CH:3]=[C:4]([C:11]([O:13][CH2:14][CH3:15])=[O:12])[C:5]2[CH:10]=[N:9][N:8]([CH:23]3[CH2:26][O:25][CH2:24]3)[C:6]=2[N:7]=1

참가 물질

5

반응물 3

HCID 11430Potassium CarbonateHCID 162444933-BromooxetaneHCID 59766670ethyl 6-bromo-1H-pyrazolo[3,4-b]pyridine-4-carboxylate

생성물 1

HCID 86703423ethyl 6-bromo-1-(oxetan-3-yl)-1H-pyrazolo[3,4-b]pyridine-4-carboxylate

시약·촉매·용매 1

HCID 6342Acetonitrile용매

실험 절차

Ethyl 6-bromo-1H-pyrazolo[3,4-b]pyridine-4-carboxylate (1 equiv.) was suspended in acetonitrile and K2CO3 (1.5 equiv.) and 3-bromooxetane (2 equiv.) was added to it. The reaction mixture was refluxed for 8 h. On completion, acetonitrile was removed under reduced pressure and water was added to it. Extraction was carried out using ethyl acetate; the combined organic layers were washed with water, brine and dried over anhydrous Na2SO4. Solvent was removed under reduced pressure and residue was purified by silica gel column chromatography to obtain the desired intermediate.

후처리

  1. temperatureThe reaction mixture was refluxed for 8 h
  2. customOn completion, acetonitrile was removed under reduced pressure and water
  3. additionwas added to it
  4. extractionExtraction
  5. washthe combined organic layers were washed with water, brine
  6. dry with materialdried over anhydrous Na2SO4
  7. customSolvent was removed under reduced pressure and residue
  8. customwas purified by silica gel column chromatography

출처 및 근거

ORD 기록
ord-5274fda68a2e4baba44682379c3c0fad
출처 데이터셋
uspto-grants-2013_12
특허 번호
US08598167B1

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