Acetic Acid → ethyl (7E)-7-[[4-[(5-methyl-2-phenyl-1,3-oxazol-4-yl)methoxy]phenyl]methoxyimino]-7-phenylheptanoate

HRID 1070149Notes

Reaction equation

HRID 1070149 reaction equation
[CH3:1][C:2]1[O:6][C:5]([C:7]2[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=2)=[N:4][C:3]=1[CH2:13][O:14][C:15]1[CH:23]=[CH:22][C:18]([CH2:19][O:20][NH2:21])=[CH:17][CH:16]=1.O=[C:25]([C:36]1[CH:41]=[CH:40][CH:39]=[CH:38][CH:37]=1)[CH2:26][CH2:27][CH2:28][CH2:29][CH2:30][C:31]([O:33][CH2:34][CH3:35])=[O:32].C(O)(=O)C.C([O-])(=O)C.[Na+]>C(OCC)(=O)C.CCCCCC.O.C(O)C>[CH3:1][C:2]1[O:6][C:5]([C:7]2[CH:8]=[CH:9][CH:10]=[CH:11][CH:12]=2)=[N:4][C:3]=1[CH2:13][O:14][C:15]1[CH:16]=[CH:17][C:18]([CH2:19][O:20]/[N:21]=[C:25](/[C:36]2[CH:37]=[CH:38][CH:39]=[CH:40][CH:41]=2)\[CH2:26][CH2:27][CH2:28][CH2:29][CH2:30][C:31]([O:33][CH2:34][CH3:35])=[O:32])=[CH:22][CH:23]=1

Participants

8

Reactant 4

HCID 176Acetic AcidHCID 517045Sodium AcetateHCID 11107694Ethyl 7-oxo-7-phenylheptanoateHCID 223445934-(5-Methyl-2-phenyl4-oxazolylmethoxy)benzyloxyamine

Product 1

HCID 11082103ethyl (7E)-7-[[4-[(5-methyl-2-phenyl-1,3-oxazol-4-yl)methoxy]phenyl]methoxyimino]-7-phenylheptanoateYield 76.5%

Reagents, catalysts & solvents 3

HCID 702EthanolSolventHCID 962WaterSolventHCID 21226206Ethyl acetate hexaneSolvent

Procedure

After a mixture of 4-(5-methyl-2-phenyl-4-oxazolylmethoxy)benzyloxyamine (600 mg), ethyl 7-oxo-7-phenylheptanoate (959 mg), acetic acid (0.331 ml), sodium acetate (317 mg) and ethanol (20 ml) was heated to reflux for 18 hours, the mixture was cooled to room temperature. Water 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 subjected to silica gel chromatography to obtain ethyl E-7-[4-(5-methyl-2-phenyl-4-oxazolylmethoxy)benzyloxyimino]-7-phenylheptanoate (800 mg, yield 72%) as a colorless oil from an ethyl acetate-hexane (1:5, v/v)-eluted fraction.

Workup

  1. temperaturewas heated
  2. temperatureto reflux for 18 hours
  3. extractionextracted with ethyl acetate
  4. washThe ethyl acetate layer was washed with an aqueous saturated solution of sodium chloride
  5. dry with materialdried (MgSO4)
  6. concentrationconcentrated

Sources & evidence

ORD record
ord-b08fd1e4bdd4474db6a4c5ad94e66331
Source dataset
uspto-grants-2001_06
Patent number
US06251926B1

Reaction notes

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