Acetic Acid → ethyl Z-6-[4-(5-methyl-2-phenyl-4-oxazolylmethoxy)benzyloxyimino]-6-phenylhexanoate

HRID 584450Notes

Reaction equation

HRID 584450 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:35]1[CH:40]=[CH:39][CH:38]=[CH:37][CH:36]=1)[CH2:26][CH2:27][CH2:28][CH2:29][C:30]([O:32][CH2:33][CH3:34])=[O:31].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:35]2[CH:36]=[CH:37][CH:38]=[CH:39][CH:40]=2)\[CH2:26][CH2:27][CH2:28][CH2:29][C:30]([O:32][CH2:33][CH3:34])=[O:31])=[CH:22][CH:23]=1

Participants

8

Reactant 4

HCID 176Acetic AcidHCID 517045Sodium AcetateHCID 3681727Ethyl 6-oxo-6-phenylhexanoateHCID 223445934-(5-Methyl-2-phenyl4-oxazolylmethoxy)benzyloxyamine

Product 1

HCID 11005905ethyl Z-6-[4-(5-methyl-2-phenyl-4-oxazolylmethoxy)benzyloxyimino]-6-phenylhexanoateYield 73.1%

Reagents, catalysts & solvents 3

HCID 702EthanolSolventHCID 962WaterSolventHCID 21226206Ethyl acetate hexaneSolvent

Procedure

After a mixture of 4-(5-methyl-2-phenyl-4-oxazolylmethoxy)benzyloxyamine (500 mg), ethyl 6-oxo-6-phenylhexanoate (415 mg), acetic acid (0.276 ml), sodium acetate (264 mg) and ethanol (20 ml) was heated to reflux for 13 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-6-[4-(5-methyl-2-phenyl-4-oxazolylmethoxy)benzyloxyimino]-6-phenylhexanoate (620 mg, yield 73%) as a colorless oil from an ethyl acetate-hexane (1:4, v/v)-eluted fraction.

Workup

  1. temperaturewas heated
  2. temperatureto reflux for 13 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-9e18617724b240a49a56a3ba82176952
Source dataset
uspto-grants-2005_08
Patent number
US06924300B2

Reaction notes

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