Hydrochloric Acid → HCID 57505637, compound

HRID 1663901Notes

Reaction equation

HRID 1663901 reaction equation
[CH:1]1([C:4]([NH:6][C:7]2[N:8]=[C:9]3[CH:14]=[CH:13][C:12]([O:15][C:16]4[CH:26]=[CH:25][CH:24]=[CH:23][C:17]=4[C:18]([O:20]CC)=[O:19])=[N:11][N:10]3[CH:27]=2)=[O:5])[CH2:3][CH2:2]1.[OH-].[Na+].Cl.C(OCC)(=O)C>O1CCCC1>[CH:1]1([C:4]([NH:6][C:7]2[N:8]=[C:9]3[CH:14]=[CH:13][C:12]([O:15][C:16]4[CH:26]=[CH:25][CH:24]=[CH:23][C:17]=4[C:18]([OH:20])=[O:19])=[N:11][N:10]3[CH:27]=2)=[O:5])[CH2:3][CH2:2]1

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 8857Ethyl AcetateHCID 14798Sodium HydroxideHCID 57505638HCID 57505638, compound

Product 1

HCID 57505637HCID 57505637, compoundYield 73%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To a solution of ethyl 2-({2-[(cyclopropylcarbonyl)amino]imidazo[1,2-b]pyridazin-6-yl}oxy)benzoate (200 mg, 0.54 mmol) in tetrahydrofuran (10 mL) was added 4N aqueous sodium hydroxide solution (1.5 mL), and the mixture was stirred at room temperature for 3 hr. 6N Hydrochloric acid (1.5 mL) and ethyl acetate were added to the reaction mixture, and the aqueous layer was extracted with ethyl acetate (×4). Combined organic layer was washed with saturated brine, dried over anhydrous sodium sulfate, and filtrated. The filtrate was concentrated under reduced pressure, and the residue was washed with ethyl acetate/hexane to give the title compound (130 mg, 73%) as a white solid.

Workup

  1. extractionthe aqueous layer was extracted with ethyl acetate (×4)
  2. washCombined organic layer was washed with saturated brine
  3. dry with materialdried over anhydrous sodium sulfate
  4. filtrationfiltrated
  5. concentrationThe filtrate was concentrated under reduced pressure
  6. washthe residue was washed with ethyl acetate/hexane

Sources & evidence

ORD record
ord-911329ba5d7b4cf38f2dc94c611ad9e9
Source dataset
uspto-grants-2011_10
Patent number
US08034812B2

Reaction notes

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