Hydrochloric Acid → HCID 178440645, compound

HRID 519844Notes

Reaction equation

HRID 519844 reaction equation
[CH2:1]([C:5]1[N:10]2[N:11]=[CH:12][CH:13]=[C:9]2[N:8]([CH:14]2[CH2:23][CH2:22][C:17]3(OCC[O:18]3)[CH2:16][CH2:15]2)[C:7](=[O:24])[C:6]=1[CH2:25][C:26]1[CH:31]=[CH:30][C:29]([C:32]2[C:33]([C:38]#[N:39])=[CH:34][CH:35]=[CH:36][CH:37]=2)=[C:28]([F:40])[CH:27]=1)[CH2:2][CH2:3][CH3:4].Cl.[OH-].[Na+]>O1CCCC1.C(OCC)(=O)C>[CH2:1]([C:5]1[N:10]2[N:11]=[CH:12][CH:13]=[C:9]2[N:8]([C@H:14]2[CH2:15][CH2:16][C@H:17]([OH:18])[CH2:22][CH2:23]2)[C:7](=[O:24])[C:6]=1[CH2:25][C:26]1[CH:31]=[CH:30][C:29]([C:32]2[C:33]([C:38]#[N:39])=[CH:34][CH:35]=[CH:36][CH:37]=2)=[C:28]([F:40])[CH:27]=1)[CH2:2][CH2:3][CH3:4]

Participants

6

Reactant 3

HCID 313Hydrochloric AcidHCID 14798Sodium HydroxideHCID 670085724'-{[7-Butyl-4-(1,4-dioxaspiro[4.5]dec-8-yl)-5-oxo-4,5-dihydropyrazolo[1,5-a]pyrimidin-6-yl]methyl}-2'-fluorobiphenyl-2-carbonitrile

Product 1

HCID 178440645HCID 178440645, compoundYield 98%

Reagents, catalysts & solvents 2

HCID 8028TetrahydrofuranSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
70 °C

Procedure

To a solution of 4′-{[7-butyl-4-(1,4-dioxaspiro[4.5]dec-8-yl)-5-oxo-4,5-dihydropyrazolo[1,5-a]pyrimidin-6-yl]methyl}-2′-fluorobiphenyl-2-carbonitrile (4.7 g) in tetrahydrofuran (40 mL) was added 3M hydrochloric acid (40 mL), and the mixture was stirred at 70° C. for 2 hr. The mixture was allowed to cool, and diluted with ethyl acetate, and the mixture was neutralized with 8M aqueous sodium hydroxide solution. The mixture was extracted with ethyl acetate, and the organic layer was washed with water and saturated brine, dried over anhydrous magnesium sulfate, and concentrated. The residue was dissolved in ethanol (20 mL)-tetrahydrofuran (20 mL). Thereto was added sodium borohydride (0.26 g) at 0° C. After stirring for 1 hr, ethyl acetate and saturated aqueous ammonium chloride solution were added. The mixture was extracted with ethyl acetate, and the organic layer was washed with water and saturated brine, dried over anhydrous magnesium sulfate, and concentrated. The residue was purified by silica gel column chromatography to give the title compound as a pale-yellow amorphous solid (3.3 g, 98%).

Workup

  1. temperatureto cool
  2. extractionThe mixture was extracted with ethyl acetate
  3. washthe organic layer was washed with water and saturated brine
  4. dry with materialdried over anhydrous magnesium sulfate
  5. concentrationconcentrated
  6. dissolutionThe residue was dissolved in ethanol (20 mL)-tetrahydrofuran (20 mL)
  7. additionThereto was added sodium borohydride (0.26 g) at 0° C
  8. stirringAfter stirring for 1 hr
  9. additionethyl acetate and saturated aqueous ammonium chloride solution were added
  10. extractionThe mixture was extracted with ethyl acetate
  11. washthe organic layer was washed with water and saturated brine
  12. dry with materialdried over anhydrous magnesium sulfate
  13. concentrationconcentrated
  14. customThe residue was purified by silica gel column chromatography

Sources & evidence

ORD record
ord-ed06df0f8d024e4cbcc0be9800087eb6
Source dataset
uspto-grants-2015_08
Patent number
US09115136B2

Reaction notes

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