Hydrochloric Acid → HCID 59556878, compound

HRID 1967370Notes

Reaction equation

HRID 1967370 reaction equation
[Si]([O:8][C@H:9]1[C:13]2([CH2:15][CH2:14]2)[C:12](=[O:16])[N:11]([C:17]2[CH:24]=[CH:23][C:20]([C:21]#[N:22])=[C:19]([Cl:25])[CH:18]=2)[C@H:10]1[CH3:26])(C(C)(C)C)(C)C.C1COCC1.Cl.C(=O)([O-])O.[Na+]>CO>[Cl:25][C:19]1[CH:18]=[C:17]([N:11]2[C@@H:10]([CH3:26])[C@@H:9]([OH:8])[C:13]3([CH2:15][CH2:14]3)[C:12]2=[O:16])[CH:24]=[CH:23][C:20]=1[C:21]#[N:22]

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 8028TetrahydrofuranHCID 516892Sodium BicarbonateHCID 59556888HCID 59556888, compound

Product 1

HCID 59556878HCID 59556878, compoundYield 77.3%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

To a solution of 4-[(6S,7S)-7-(tert-butyldimethylsilyloxy)-6-methyl-4-oxo-5-azaspiro[2.4]hept-5-yl]-2-chlorobenzonitrile (89.0 mg) in a mixed solvent of THF (6 mL) and methanol (6 mL) was added 6 mol/L hydrochloric acid (4.0 mL), and the mixture was stirred at room temperature for 18 hr. The reaction mixture was added to saturated aqueous sodium hydrogen carbonate, and the mixture was extracted with ethyl acetate. The extract was washed with saturated brine, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The residue was purified by silica gel column chromatography, and recrystallized from hexane-ethyl acetate to give the title compound as a colorless solid (yield: 48.7 mg, 66%).

Workup

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe extract was washed with saturated brine
  3. dry with materialdried over anhydrous magnesium sulfate
  4. concentrationconcentrated under reduced pressure
  5. customThe residue was purified by silica gel column chromatography
  6. customrecrystallized from hexane-ethyl acetate

Sources & evidence

ORD record
ord-d85146047f0447e5a3f0537f5a0b6f62
Source dataset
uspto-grants-2013_04
Patent number
US08420694B2

Reaction notes

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