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

HRID 1854046ノート

反応式

HRID 1854046 の反応式
[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

参加物

5

反応物 3

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

生成物 1

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

試薬・触媒・溶媒 1

HCID 6342Acetonitrile溶媒

実験手順

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.

後処理

  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

出典と根拠

ORDレコード
ord-d86aec7a6fae42808c87c84e4540ef0c
出典データセット
uspto-grants-2015_02
特許番号
US08962620B2

反応ノート

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