Hydrochloric Acid → HCID 178438760, compound

HRID 1412551Notes

Reaction equation

HRID 1412551 reaction equation
O1[C:5]2([CH2:10][CH2:9][CH:8]([N:11]3[C:16](=[O:17])[C:15]([CH2:18][C:19]4[CH:24]=[CH:23][C:22]([C:25]5[C:26]([C:31]#[N:32])=[CH:27][CH:28]=[CH:29][CH:30]=5)=[C:21]([CH3:33])[CH:20]=4)=[C:14]([CH2:34][CH2:35][CH3:36])[N:13]4[N:37]=[CH:38][CH:39]=[C:12]34)[CH2:7][CH2:6]2)[O:4]CC1.Cl.[OH-].[Na+]>O1CCCC1.C(OCC)(=O)C>[OH:4][C@H:5]1[CH2:6][CH2:7][C@H:8]([N:11]2[C:16](=[O:17])[C:15]([CH2:18][C:19]3[CH:24]=[CH:23][C:22]([C:25]4[C:26]([C:31]#[N:32])=[CH:27][CH:28]=[CH:29][CH:30]=4)=[C:21]([CH3:33])[CH:20]=3)=[C:14]([CH2:34][CH2:35][CH3:36])[N:13]3[N:37]=[CH:38][CH:39]=[C:12]23)[CH2:9][CH2:10]1

Participants

6

Reactant 3

HCID 313Hydrochloric AcidHCID 14798Sodium HydroxideHCID 670086554'-{[4-(1,4-Dioxaspiro[4.5]dec-8-yl)-5-oxo-7-propyl-4,5-dihydropyrazolo[1,5-a]pyrimidin-6-yl]methyl}-2'-methylbiphenyl-2-carbonitrile

Product 1

HCID 178438760HCID 178438760, compoundYield 95.7%

Reagents, catalysts & solvents 2

HCID 8028TetrahydrofuranSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
60 °C

Procedure

To a solution of 4′-{[4-(1,4-dioxaspiro[4.5]dec-8-yl)-5-oxo-7-propyl-4,5-dihydropyrazolo[1,5-a]pyrimidin-6-yl]methyl}-2′-methylbiphenyl-2-carbonitrile (1.0 g) in tetrahydrofuran (10 mL) was added 3M hydrochloric acid (10 mL), and the mixture was stirred at 60° C. for 12 hr. The mixture was allowed to cool, and diluted with ethyl acetate, and the mixture was neutralized with 1 M 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 (5 mL)-tetrahydrofuran (5 mL). Sodium borohydride (0.074 g) was added thereto at 0° C. After stirring for 2 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 (0.88 g, 94%).

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 (5 mL)-tetrahydrofuran (5 mL)
  7. additionSodium borohydride (0.074 g) was added
  8. customat 0° C
  9. stirringAfter stirring for 2 hr
  10. additionethyl acetate and saturated aqueous ammonium chloride solution were added
  11. extractionThe mixture was extracted with ethyl acetate
  12. washthe organic layer was washed with water and saturated brine
  13. dry with materialdried over anhydrous magnesium sulfate
  14. concentrationconcentrated
  15. customThe residue was purified by silica gel column chromatography

Sources & evidence

ORD record
ord-b377de2e74c94f549a6b562994db4ed8
Source dataset
uspto-grants-2014_12
Patent number
US08921379B2

Reaction notes

Loading…