Water → HCID 68154041, compound

HRID 341072Notes

Reaction equation

HRID 341072 reaction equation
[O:1]=[C:2]1[C:6]2=[CH:7][N:8]([CH2:15][C:16]3[CH:21]=[CH:20][C:19]([N:22]4[CH:26]=[CH:25][CH:24]=[N:23]4)=[CH:18][CH:17]=3)[C:9]3[CH:10]=[CH:11][CH:12]=[CH:13][C:14]=3[C:5]2=[N:4][N:3]1[C:27]1[CH:34]=[CH:33][CH:32]=[CH:31][C:28]=1C=O.[CH3:35][Mg]Br.[C:38](=[O:41])(O)[O-].[Na+].O>ClCCl>[OH:41][CH2:38][CH2:35][C:28]1[CH:31]=[CH:32][CH:33]=[CH:34][C:27]=1[N:3]1[C:2](=[O:1])[C:6]2=[CH:7][N:8]([CH2:15][C:16]3[CH:21]=[CH:20][C:19]([N:22]4[CH:26]=[CH:25][CH:24]=[N:23]4)=[CH:18][CH:17]=3)[C:9]3[CH:10]=[CH:11][CH:12]=[CH:13][C:14]=3[C:5]2=[N:4]1

Participants

6

Reactant 4

HCID 962WaterHCID 516892Sodium BicarbonateHCID 86668679HCID 86668679, compoundHCID 178418573HCID 178418573, compound2×

Product 1

HCID 68154041HCID 68154041, compound

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Conditions

Temperature
-78 °C

Procedure

2-(3-Oxo-5-{[4-(1H-pyrazol-1-yl)phenyl]methyl}-3,5-dihydro-2H-pyrazolo[4,3-c]quinolin-2-yl)benzaldehyde (Example 529, 76 mg, 0.17 mmol) was dissolved in dichloromethane (5 mL) and cooled to −78° C. Methylmagnesium bromide (0.057 mL, 3 M diethyl ether solution, 0.17 mmol, 1 equiv) was added dropwise and the mixture was stirred for 30 minutes at −78° C. Additional methylmagnesium bromide (0.057 mL, 3 M diethyl ether solution, 0.17 mmol, 1 equiv) was added and the mixture was stirred for an additional 30 minutes at −78° C. The mixture was treated with sodium bicarbonate (3 mL, aqueous saturated), warmed to ambient temperature, poured into water (10 mL) and extracted with dichloromethane (3×50 mL). The combined organic extracts were dried with sodium sulfate, filtered and concentrated in vacuo. The residue was purified via silica gel gradient chromatography (100:0 to 0:100; hexanes:ethyl acetate; then 100:0 to 0:100; ethyl acetate:ethyl acetate containing 5% methanol), providing the titled compound: 1H-NMR (400 MHz, d6-DMSO) δ 9.13 (1H, s), 8.45 (1H, d, J=2.4 Hz), 8.18 (1H, d, J=8.0 Hz), 7.83 (2H, d, J=8.6 Hz), 7.78 (1H, d, J=8.8 Hz), 7.73 (1H, d, 1.1 Hz), 7.70 (1H, d, J=7.8 Hz), 7.65-7.60 (1H, m), 7.54 (1H, t, J=7.7 Hz), 7.48 (2H, d, 8.3 Hz), 7.44 (1H, d, J=7.8 Hz), 7.39-7.31 (2H, m), 6.53 (1H, m), 5.78 (2H, s), 5.19 (1H, d, J=4.2 Hz), 4.94-4.88 (1H, m), 1.27 (3H, d, J=6.4 Hz) ppm; high resolution mass spectrometry (ES+) m/z 462.1906 [(M+H)+; calculated for C29H24N5O2: 462.1925].

Workup

  1. stirringthe mixture was stirred for an additional 30 minutes at −78° C
  2. temperaturewarmed to ambient temperature
  3. extractionextracted with dichloromethane (3×50 mL)
  4. dry with materialThe combined organic extracts were dried with sodium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo
  7. customThe residue was purified via silica gel gradient chromatography (100:0 to 0:100

Sources & evidence

ORD record
ord-a72600dab2cd493686332f13136cf937
Source dataset
uspto-grants-2014_11
Patent number
US08895580B2

Reaction notes

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