Dichloromethane → 2-((4-amino-3-(pyridin-3-yl)-1H-pyrazolo[3,4-d]pyrimidin-1-yl)methyl)-3-phenyl-4H-chromen-4-one

HRID 239650

Reaction equation

HRID 239650 reaction equation
[NH2:1][C:2]1[N:7]=[CH:6][N:5]=[C:4]2[N:8]([CH2:12][C:13]3[O:14][C:15]4[C:20]([C:21](=[O:29])[C:22]=3[C:23]3[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=3)=[CH:19][CH:18]=[CH:17][CH:16]=4)[N:9]=[C:10](I)[C:3]=12.[N:30]1[CH:35]=[CH:34][CH:33]=[C:32](B(O)O)[CH:31]=1.C(=O)([O-])[O-].[Na+].[Na+].ClCCl>CN(C=O)C.C(O)C.O>[NH2:1][C:2]1[N:7]=[CH:6][N:5]=[C:4]2[N:8]([CH2:12][C:13]3[O:14][C:15]4[C:20]([C:21](=[O:29])[C:22]=3[C:23]3[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=3)=[CH:19][CH:18]=[CH:17][CH:16]=4)[N:9]=[C:10]([C:32]3[CH:31]=[N:30][CH:35]=[CH:34][CH:33]=3)[C:3]=12

Participants

8

Reactant 4

HCID 6344DichloromethaneHCID 10340Sodium CarbonateHCID 27343783-Pyridinylboronic acidHCID 582691472-((4-Amino-3-iodo-1H-pyrazolo[3,4-d]pyrimidin-1-yl)methyl)-3-phenyl-4H-chromen-4-one

Product 1

HCID 582691292-((4-amino-3-(pyridin-3-yl)-1H-pyrazolo[3,4-d]pyrimidin-1-yl)methyl)-3-phenyl-4H-chromen-4-oneYield 13.4%

Reagents, catalysts & solvents 3

HCID 702EthanolSolventHCID 962WaterSolventHCID 6228DimethylformamideSolvent

Conditions

Temperature
80 °C

Procedure

To a solution of Example 57a (0.250 g, 0.50 mmoles) in DMF (5 ml), ethanol (2.5 ml) and water (2.5 ml), 3-pyridinylboronic acid (0.080 g, 0.65 mmoles) and sodium carbonate (0.264 g, 2.5 mmoles) were added and the system is degassed for 30 min. Tetrakis triphenylphosphine Palladium (0.109 g, 0.095 mmoles) was added under nitrogen atmosphere and heated to 80° C. After 12 h, the reaction mixture was celite filtered, concentrated and extracted with ethyl acetate. The organic layer was dried over sodium sulphate and concentrated under reduced pressure. The crude product was purified by column chromatography with methanol: dichloromethane to afford the title compound as brown solid (0.030 g, 13% yield). MP: 253-255° C. 1H-NMR (δ ppm, DMSO-d6, 400 MHz): δ 8.78(d, J=1.7 Hz, 1H), 8.65(dd, J=4.7,1.3 Hz, 1H), 8.24(s,1H), 8.05(dd, J=7.9,1.6 Hz, 1H), 8.00(td, J=7.9,1.9 Hz, 1H), 7.77(d, J=7.2,1.7 Hz, 1H), 7.54-7.43(m, 3H), 7.37-7.30(m,5H), 7.12(br s, 2H), 5.54(s,2H). Mass: 447.19(M++1).

Workup

  1. customthe system is degassed for 30 min
  2. concentrationconcentrated
  3. extractionextracted with ethyl acetate
  4. dry with materialThe organic layer was dried over sodium sulphate
  5. concentrationconcentrated under reduced pressure
  6. customThe crude product was purified by column chromatography with methanol

Sources & evidence

ORD record
ord-815cb234596f486283c5da0d0aaddcfc
Source dataset
uspto-grants-2014_02
Patent number
US08642607B2

Linked notes

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