Pyrazole → 3-[(3R,4S)-3-Hydroxytetrahydro-2H-pyran-4-yl]-6-{[6-(1H-pyrazol-1-yl)pyridine-3-yl]methyl}benzo[h]quinazolin-4(3H)-one

HRID 82443Notes

Reaction equation

HRID 82443 reaction equation
Cl[C:2]1[N:7]=[CH:6][C:5]([CH2:8][C:9]2[CH:10]=[C:11]3[C:16](=[C:17]4[CH:22]=[CH:21][CH:20]=[CH:19][C:18]=24)[N:15]=[CH:14][N:13]([C@H:23]2[CH2:28][CH2:27][O:26][CH2:25][C@@H:24]2[OH:29])[C:12]3=[O:30])=[CH:4][CH:3]=1.[NH:31]1[CH:35]=[CH:34][CH:33]=[N:32]1.C(=O)([O-])[O-].[K+].[K+].CN[C@@H]1CCCC[C@H]1NC>CS(C)=O.C(OCC)(=O)C.O.[Cu]I>[OH:29][C@@H:24]1[C@@H:23]([N:13]2[C:12](=[O:30])[C:11]3[C:16](=[C:17]4[CH:22]=[CH:21][CH:20]=[CH:19][C:18]4=[C:9]([CH2:8][C:5]4[CH:6]=[N:7][C:2]([N:31]5[CH:35]=[CH:34][CH:33]=[N:32]5)=[CH:3][CH:4]=4)[CH:10]=3)[N:15]=[CH:14]2)[CH2:28][CH2:27][O:26][CH2:25]1

Participants

9

Reactant 4

HCID 1048PyrazoleHCID 11430Potassium CarbonateHCID 2733821trans-N,N'-dimethyl-1,2-cyclohexanediamine2×HCID 510006176-[(6-chloropyridin-3-yl)methyl]-3-[(3R,4S)-3-hydroxytetrahydro-2H-pyran-4-yl]benzo[h]quinazolin-4(3H)-one

Product 1

HCID 510016033-[(3R,4S)-3-Hydroxytetrahydro-2H-pyran-4-yl]-6-{[6-(1H-pyrazol-1-yl)pyridine-3-yl]methyl}benzo[h]quinazolin-4(3H)-one

Reagents, catalysts & solvents 4

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)Catalyst2×HCID 679Dimethyl SulfoxideSolventHCID 962WaterSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
120 °C

Procedure

To a solution of 6-[(6-chloropyridin-3-yl)methyl]-3-[(3R,4S)-3-hydroxytetrahydro-2H-pyran-4-yl]benzo[h]quinazolin-4(3H)-one (Example 1, 0.080 g, 0.19 mmol) and pyrazole (0.052 g, 0.15 mmol) in 2 mL of DMSO under an atmosphere of nitrogen was added potassium carbonate (0.57 mL, 1 N aqueous, 0.57 mmol), trans-N,N′-dimethylcyclohexane-1,2-diamine (21.6 mg, 0.152 mmol), and copper(I) iodide (0.014 g, 0.076 mmol). The mixture was heated at 120° C. for 20 h, cooled to rt, and additional trans-N,N′-dimethylcyclohexane-1,2-diamine (21.6 mg, 0.152 mmol) and copper(I) iodide (0.014 g, 0.076 mmol) were added. The reaction was heated at 150° C. for 24 h, cooled to rt, and diluted with ethyl acetate and water. The aqueous layer was extracted 3× with ethyl acetate, and the combined organic fractions were washed with brine, dried over sodium sulfate, filtered, and concentrated in vacuo. The residue was purified via silica gel chromatography, eluting with 0-5% methanol in dichloromethane, to provide the title compound that gave a proton NMR spectra consistent with theory and a mass ion (ES+) of 453.51 for [M+H]+: 1H NMR (400 MHz, CD3OD) δ 8.93 (d, J=7.3 Hz, 1H), 8.46 (s, 1H), 8.30 (s, 1H), 8.26 (s, 1H), 7.90 (s, 1H), 7.86 (d, J=9.2 Hz, 1H), 7.79 (d, J=8.5 Hz, 1H), 7.66-7.57 (m, 2H), 7.50 (d, J=8.5 Hz, 1H), 6.39 (s, 1H), 6.30 (s, 1H), 4.86-4.84 (m, 1H), 4.36 (s, 2H), 4.23-4.13 (m, 2H), 4.12-4.04 (m, 1H), 3.56-3.50 (m, 1H), 3.34-3.32 (m, 1H), 2.24-2.19 (m, 1H), 2.00-1.97 (m, 1H).

Workup

  1. temperaturecooled to rt
  2. temperatureThe reaction was heated at 150° C. for 24 h
  3. temperaturecooled to rt
  4. extractionThe aqueous layer was extracted 3× with ethyl acetate
  5. washthe combined organic fractions were washed with brine
  6. dry with materialdried over sodium sulfate
  7. filtrationfiltered
  8. concentrationconcentrated in vacuo
  9. customThe residue was purified via silica gel chromatography
  10. washeluting with 0-5% methanol in dichloromethane

Sources & evidence

ORD record
ord-a4fe4c94b4254f58aa5ff0e6dd41fe6a
Source dataset
uspto-grants-2014_09
Patent number
US08846702B2

Reaction notes

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