Hydrochloric Acid → 5-[3-(4-fluoro-phenyl)-5-hydroxymethyl-isoxazol-4-ylmethoxy]-2-methyl-2H-pyrazole-3-carboxylic acid

HRID 1695432Notes

Reaction equation

HRID 1695432 reaction equation
C[O:2][C:3]([C:5]1[N:6]([CH3:26])[N:7]=[C:8]([O:10][CH2:11][C:12]2[C:13]([C:19]3[CH:24]=[CH:23][C:22]([F:25])=[CH:21][CH:20]=3)=[N:14][O:15][C:16]=2[CH2:17][OH:18])[CH:9]=1)=[O:4].[OH-].[Li+].Cl.C(OCC)(=O)C>C1COCC1.CO.O>[F:25][C:22]1[CH:23]=[CH:24][C:19]([C:13]2[C:12]([CH2:11][O:10][C:8]3[CH:9]=[C:5]([C:3]([OH:4])=[O:2])[N:6]([CH3:26])[N:7]=3)=[C:16]([CH2:17][OH:18])[O:15][N:14]=2)=[CH:20][CH:21]=1

Participants

8

Reactant 4

HCID 313Hydrochloric AcidHCID 3939Lithium HydroxideHCID 8857Ethyl AcetateHCID 66643735HCID 66643735, compound

Product 1

HCID 666438625-[3-(4-fluoro-phenyl)-5-hydroxymethyl-isoxazol-4-ylmethoxy]-2-methyl-2H-pyrazole-3-carboxylic acidYield 92%

Reagents, catalysts & solvents 3

HCID 887MethanolSolventHCID 962WaterSolventHCID 8028TetrahydrofuranSolvent

Procedure

To 5-[3-(4-fluoro-phenyl)-5-hydroxymethyl-isoxazol-4-ylmethoxy]-2-methyl-2H-pyrazole-3-carboxylic acid methyl ester (250 mg, 0.69 mmol) in THF (1.17 mL), methanol (391 μL) and water (1.17 mL) was added lithium hydroxide (33.8 mg, 1.4 mmol). The reaction mixture was stirred for 2 h at room temperature. Addition of aqueous hydrochloride solution (1 N, 25 mL) and extraction with ethyl acetate yielded the title compound (220 mg, 92%) as a light brown solid. MS: m/e=346.0 [M−H]−.

Sources & evidence

ORD record
ord-c374b3c5b72b45e3a62bda4c9cd4a1e0
Source dataset
uspto-grants-2012_04
Patent number
US08163728B2

Reaction notes

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