Hydrochloric Acid → HCID 178438757, compound

HRID 2048592Notes

Reaction equation

HRID 2048592 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)=[CH:21][C:20]=4[O:33][CH3:34])=[C:14]([CH2:35][CH2:36][CH3:37])[N:13]4[N:38]=[CH:39][CH:40]=[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)=[CH:21][C:20]=3[O:33][CH3:34])=[C:14]([CH2:35][CH2:36][CH3:37])[N:13]3[N:38]=[CH:39][CH:40]=[C:12]23)[CH2:9][CH2:10]1

Participants

6

Reactant 3

HCID 313Hydrochloric AcidHCID 14798Sodium HydroxideHCID 670088824'-{[4-(1,4-Dioxaspiro[4.5]dec-8-yl)-5-oxo-7-propyl-4,5-dihydropyrazolo[1,5-a]pyrimidin-6-yl]methyl}-3'-methoxybiphenyl-2-carbonitrile

Product 1

HCID 178438757HCID 178438757, compoundYield 95%

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}-3′-methoxybiphenyl-2-carbonitrile (1.1 g) in tetrahydrofuran (10 mL) was added 3M hydrochloric acid (10 mL), and the mixture was stirred at 60° C. for 5 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 (10 mL)-tetrahydrofuran (10 mL). Thereto was added sodium borohydride (0.075 g) 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 (0.93 g, 95%).

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 (10 mL)-tetrahydrofuran (10 mL)
  7. additionThereto was added sodium borohydride (0.075 g) at 0° C
  8. stirringAfter stirring for 2 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-8c9e28c569f049c4b12eada8bebf51be
Source dataset
uspto-grants-2013_11
Patent number
US08592431B2

Reaction notes

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