Hydrochloric Acid → [3-[3-methoxy-4-(5-methyl-2-phenyl-4-oxazolylmethoxy)benzyloxy]-1-phenyl-1H-pyrazol-4-yl]acetic acid

HRID 1295326Notes

Reaction equation

HRID 1295326 reaction equation
[CH3:1][O:2][C:3]1[CH:4]=[C:5]([CH:24]=[CH:25][C:26]=1[O:27][CH2:28][C:29]1[N:30]=[C:31]([C:35]2[CH:40]=[CH:39][CH:38]=[CH:37][CH:36]=2)[O:32][C:33]=1[CH3:34])[CH2:6][O:7][C:8]1[C:12]([CH2:13][C:14]([O:16]C)=[O:15])=[CH:11][N:10]([C:18]2[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=2)[N:9]=1.[OH-].[Na+].O1CCCC1.Cl>C(O)C>[CH3:1][O:2][C:3]1[CH:4]=[C:5]([CH:24]=[CH:25][C:26]=1[O:27][CH2:28][C:29]1[N:30]=[C:31]([C:35]2[CH:40]=[CH:39][CH:38]=[CH:37][CH:36]=2)[O:32][C:33]=1[CH3:34])[CH2:6][O:7][C:8]1[C:12]([CH2:13][C:14]([OH:16])=[O:15])=[CH:11][N:10]([C:18]2[CH:19]=[CH:20][CH:21]=[CH:22][CH:23]=2)[N:9]=1

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 8028TetrahydrofuranHCID 14798Sodium HydroxideHCID 86591686methyl [3-[3-methoxy-4-(5-methyl-2-phenyl-4-oxazolylmethoxy)benzyloxy]-1-phenyl-1H-pyrazol-4-yl]acetate

Product 1

HCID 69431218[3-[3-methoxy-4-(5-methyl-2-phenyl-4-oxazolylmethoxy)benzyloxy]-1-phenyl-1H-pyrazol-4-yl]acetic acidYield 90.7%

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

A mixture of methyl [3-[3-methoxy-4-(5-methyl-2-phenyl-4-oxazolylmethoxy)benzyloxy]-1-phenyl-1H-pyrazol-4-yl]acetate (496 mg), 1 N aqueous sodium hydroxide solution (2 ml), tetrahydrofuran (4 ml) and ethanol (4 ml) was stirred at room temperature for 1 hr. 1N Hydrochloric acid (2 ml) was added to the reaction mixture and the mixture was extracted with ethyl acetate. The ethyl acetate layer was washed with saturated brine, dried (MgSO4) and concentrated. The obtained colorless crystals were collected by filtration to give [3-[3-methoxy-4-(5-methyl-2-phenyl-4-oxazolylmethoxy)benzyloxy]-1-phenyl-1H-pyrazol-4-yl]acetic acid (438 mg, yield 90%), which was then recrystallized from ethanol-water. melting point: 147–148° C.

Workup

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe ethyl acetate layer was washed with saturated brine
  3. dry with materialdried (MgSO4)
  4. concentrationconcentrated
  5. filtrationThe obtained colorless crystals were collected by filtration

Sources & evidence

ORD record
ord-3fde4854dc8d49f987287601792bddbf
Source dataset
uspto-grants-2007_07
Patent number
US07241785B2

Reaction notes

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