Hydrochloric Acid → HCID 10927675, compound

HRID 2299782Notes

Reaction equation

HRID 2299782 reaction equation
[CH3:1][CH:2]([CH3:32])/[C:3](=[N:9]\[O:10][CH2:11][C:12]1[CH:17]=[CH:16][C:15]([O:18][CH2:19][C:20]2[N:21]=[C:22]([C:26]3[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=3)[O:23][C:24]=2[CH3:25])=[CH:14][CH:13]=1)/[C:4]([O:6]CC)=[O:5].Cl>O1CCCC1.CO.[OH-].[Na+]>[CH3:1][CH:2]([CH3:32])/[C:3](=[N:9]\[O:10][CH2:11][C:12]1[CH:13]=[CH:14][C:15]([O:18][CH2:19][C:20]2[N:21]=[C:22]([C:26]3[CH:27]=[CH:28][CH:29]=[CH:30][CH:31]=3)[O:23][C:24]=2[CH3:25])=[CH:16][CH:17]=1)/[C:4]([OH:6])=[O:5]

Participants

6

Reactant 2

HCID 313Hydrochloric AcidHCID 11133884HCID 11133884, compound

Product 1

HCID 10927675HCID 10927675, compoundYield 85.8%

Reagents, catalysts & solvents 3

HCID 887MethanolSolventHCID 8028TetrahydrofuranSolventHCID 14798Sodium HydroxideSolvent

Procedure

Ethyl E-3-methyl-2-[4-(5-methyl-2-phenyl-4-oxazolylmethoxy)benzyloxyimino]butyrate (1.27 g) was dissolved in tetrahydrofuran (10 ml)-methanol (5 ml), and 1N aqueous solution of sodium hydroxide (5 ml) was added and the mixture was stirred for 2 hours at room temperature. 1N HCl (5.5 ml) was added to the reaction mixture, and the mixture was extracted with ethyl acetate. The ethyl acetate layer was washed with saturated aqueous sodium chloride, dried (MgSO4) and then concentrated. The residual crystal was recrystallized from ethyl acetate-hexane to obtain E-3-methyl-2-[4-(5-methyl-2-phenyl-4-oxazolylmethoxy)benzyloxyimino]butyric acid (1.02 g, yield: 85%) as colorless crystals. m.p. 128-129° C.

Workup

  1. additionwas added
  2. extractionthe mixture was extracted with ethyl acetate
  3. washThe ethyl acetate layer was washed with saturated aqueous sodium chloride
  4. dry with materialdried (MgSO4)
  5. concentrationconcentrated
  6. customThe residual crystal was recrystallized from ethyl acetate-hexane

Sources & evidence

ORD record
ord-1fced901e8db42ed8481aa5de0b6a680
Source dataset
uspto-grants-2002_12
Patent number
US06495581B1

Reaction notes

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