Hydrochloric Acid → 3-[4-(5-Methyl-2-phenyl-4-oxazolylmethoxy)benzyloxyimino]-3-phenylpropionic acid

HRID 1070127Notes

Reaction equation

HRID 1070127 reaction equation
O.[OH-].[Li+].[CH3:4][C:5]1[O:9][C:8]([C:10]2[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=2)=[N:7][C:6]=1[CH2:16][O:17][C:18]1[CH:39]=[CH:38][C:21]([CH2:22][O:23]/[N:24]=[C:25](/[C:32]2[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=2)\[CH2:26][C:27]([O:29]CC)=[O:28])=[CH:20][CH:19]=1.O.Cl>O1CCCC1>[CH3:4][C:5]1[O:9][C:8]([C:10]2[CH:11]=[CH:12][CH:13]=[CH:14][CH:15]=2)=[N:7][C:6]=1[CH2:16][O:17][C:18]1[CH:39]=[CH:38][C:21]([CH2:22][O:23][N:24]=[C:25]([C:32]2[CH:33]=[CH:34][CH:35]=[CH:36][CH:37]=2)[CH2:26][C:27]([OH:29])=[O:28])=[CH:20][CH:19]=1

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 962WaterHCID 168937Lithium hydroxide, monohydrateHCID 10950991ethyl (3E)-3-[[4-[(5-methyl-2-phenyl-1,3-oxazol-4-yl)methoxy]phenyl]methoxyimino]-3-phenylpropanoate

Product 1

HCID 537597083-[4-(5-Methyl-2-phenyl-4-oxazolylmethoxy)benzyloxyimino]-3-phenylpropionic acidYield 99%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

Lithium hydroxide monohydrate (402 mg) was added to a solution of ethyl E-3-[4-(5-methyl-2-phenyl4-oxazolylmethoxy)benzyloxyimino]-3-phenylpropionate (1.16 g) in tetrahydrofuran (60 ml)-water (40 ml) and stirred at room temperature for 18 hours. Dilute hydrochloric acid was added to the reaction mixture and extracted with ethyl acetate. The ethyl acetate layer was washed with an aqueous saturated solution of sodium chloride, dried (MgSO4) and concentrated. The residue was recrystallized to obtain 3-[4-(5-methyl-2-phenyl-4-oxazolylmethoxy)benzyloxyimino]-3-phenylpropionic acid (1.08 g, yield 99%) as colorless crystals. m.p. 107-108° C.

Workup

  1. extractionextracted with ethyl acetate
  2. washThe ethyl acetate layer was washed with an aqueous saturated solution of sodium chloride
  3. dry with materialdried (MgSO4)
  4. concentrationconcentrated
  5. customThe residue was recrystallized

Sources & evidence

ORD record
ord-a1456b06b56043f99857b385d17b3bb5
Source dataset
uspto-grants-2001_06
Patent number
US06251926B1

Reaction notes

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