Water → 6-(4-Benzyloxy-2-fluoro-phenyl)-3-methyl-1-(tetrahydro-pyran-2-yl)-1H-pyrazolo[3,4-b]pyridine-4-carboxylic acid ethyl ester

HRID 2360697노트

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HRID 2360697 반응식
[CH2:1]([O:3][C:4]([C:6]1[C:7]2[C:15]([CH3:16])=[N:14][N:13]([CH:17]3[CH2:22][CH2:21][CH2:20][CH2:19][O:18]3)[C:8]=2[N:9]=[C:10](Br)[CH:11]=1)=[O:5])[CH3:2].[CH2:23]([O:30][C:31]1[CH:36]=[CH:35][C:34](B(O)O)=[C:33]([F:40])[CH:32]=1)[C:24]1[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1.C(=O)([O-])[O-].[K+].[K+].O>COCCOC.O>[CH2:1]([O:3][C:4]([C:6]1[C:7]2[C:15]([CH3:16])=[N:14][N:13]([CH:17]3[CH2:22][CH2:21][CH2:20][CH2:19][O:18]3)[C:8]=2[N:9]=[C:10]([C:34]2[CH:35]=[CH:36][C:31]([O:30][CH2:23][C:24]3[CH:25]=[CH:26][CH:27]=[CH:28][CH:29]=3)=[CH:32][C:33]=2[F:40])[CH:11]=1)=[O:5])[CH3:2]

참가 물질

6

반응물 4

HCID 962WaterHCID 11430Potassium CarbonateHCID 27377864-Benzyloxy-2-fluorophenylboronic acidHCID 866803196-bromo-3-methyl-1-(tetrahydro-pyran-2-yl)-1H-pyrazolo[3,4-b]pyridine-4-carboxylic acid ethyl ester

생성물 1

HCID 866803186-(4-Benzyloxy-2-fluoro-phenyl)-3-methyl-1-(tetrahydro-pyran-2-yl)-1H-pyrazolo[3,4-b]pyridine-4-carboxylic acid ethyl ester수율 82.4%

시약·촉매·용매 1

HCID 18180031Water 1,2-dimethoxyethane용매

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온도
85 °C

실험 절차

To mixture of 6-bromo-3-methyl-1-(tetrahydro-pyran-2-yl)-1H-pyrazolo[3,4-b]pyridine-4-carboxylic acid ethyl ester (21.0 g), 4-benzyloxy-2-fluorophenylboronic acid (16.8 g) and potassium carbonate (8.7 g) in DME/water (v/v=2/1, 300 mL) was added at r.t. under Ar-atmosphere palladium(0) bis(tri-tert-butylphosphine) (0.99 g) and the mixture was stirred at 85° C. for 90 min. To the mixture water was added and extracted with ethyl acetate. The organic phase was washed several times with water, finally with brine. Methanol was added and the precipitate formed was filtered off, dried in air to give 6-(4-Benzyloxy-2-fluoro-phenyl)-3-methyl-1-(tetrahydro-pyran-2-yl)-1H-pyrazolo[3,4-b]pyridine-4-carboxylic acid ethyl ester (23.0 g, 82% yield). This material was dissolved in isopropanol (100 mL), and 1N sodium hydroxide solution (140 mL) was added. The solution was stirred overnight, filtered, then the filtrate was adjusted to pH2-3 and the precipitate formed was dried in air giving 6-(4-benzyloxy-2-fluoro-phenyl)-3-methyl-1-(tetrahydro-pyran-2-yl)-1H-pyrazolo[3,4-b]pyridine-4-carboxylic acid (18 g, 83%).

후처리

  1. additionwas added at r.t. under Ar-atmosphere palladium(0) bis(tri-tert-butylphosphine) (0.99 g)
  2. extractionextracted with ethyl acetate
  3. washThe organic phase was washed several times with water
  4. additionMethanol was added
  5. customthe precipitate formed
  6. filtrationwas filtered off
  7. customdried in air

출처 및 근거

ORD 기록
ord-b7567c81f9a54f0f9bf5238532422f22
출처 데이터셋
uspto-grants-2014_04
특허 번호
US08686150B2

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