Hydrochloric Acid → (7E)-7-[[4-[(5-methyl-2-phenyl-1,3-oxazol-4-yl)methoxy]phenyl]methoxyimino]-7-phenylheptanoic acid

HRID 584502Notes

Reaction equation

HRID 584502 reaction equation
[OH-].[Na+].[CH3:3][C:4]1[O:8][C:7]([C:9]2[CH:14]=[CH:13][CH:12]=[CH:11][CH:10]=2)=[N:6][C:5]=1[CH2:15][O:16][C:17]1[CH:42]=[CH:41][C:20]([CH2:21][O:22]/[N:23]=[C:24](/[C:35]2[CH:40]=[CH:39][CH:38]=[CH:37][CH:36]=2)\[CH2:25][CH2:26][CH2:27][CH2:28][CH2:29][C:30]([O:32]CC)=[O:31])=[CH:19][CH:18]=1.CO.Cl>O1CCCC1>[CH3:3][C:4]1[O:8][C:7]([C:9]2[CH:10]=[CH:11][CH:12]=[CH:13][CH:14]=2)=[N:6][C:5]=1[CH2:15][O:16][C:17]1[CH:42]=[CH:41][C:20]([CH2:21][O:22]/[N:23]=[C:24](/[C:35]2[CH:40]=[CH:39][CH:38]=[CH:37][CH:36]=2)\[CH2:25][CH2:26][CH2:27][CH2:28][CH2:29][C:30]([OH:32])=[O:31])=[CH:19][CH:18]=1

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 887MethanolHCID 14798Sodium HydroxideHCID 11082103ethyl (7E)-7-[[4-[(5-methyl-2-phenyl-1,3-oxazol-4-yl)methoxy]phenyl]methoxyimino]-7-phenylheptanoate

Product 1

HCID 11060312(7E)-7-[[4-[(5-methyl-2-phenyl-1,3-oxazol-4-yl)methoxy]phenyl]methoxyimino]-7-phenylheptanoic acidYield 82.2%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

A 1N aqueous saturated solution of sodium hydroxide (5 ml) was added to a solution of ethyl E-7-[4-(5-methyl-2-phenyl-4-oxazolylmethoxy)benzyloxyimino]-7-phenylheptanoate (730 mg) in tetrahydrofuran (10 ml)-methanol (5 ml) and stirred at room temperature for 1 hour. 1N hydrochloric acid (5.5 ml) 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 from ethyl acetate-hexane to obtain E-7-[4-(5-methyl-2-phenyl-4-oxazolylmethoxy)benzyloxyimino]-7-phenylheptanoic acid (569 mg, yield 82%) as colorless crystals. m.p. 84-85° 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 from ethyl acetate-hexane

Sources & evidence

ORD record
ord-5254db631eb24fec9196a187402b98eb
Source dataset
uspto-grants-2005_08
Patent number
US06924300B2

Reaction notes

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