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Citric Acid → {4-[(3-methyl-5-phenyl-1H-pyrazol-1-yl)methyl]phenyl}methanol

HRID 2110857
Notes
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Reaction equation

HRID 2110857 reaction equation
[CH3:1][C:2]1[CH:6]=[C:5]([C:7]2[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=2)[NH:4][N:3]=1.Cl[CH2:14][C:15]1[CH:20]=[CH:19][C:18]([CH2:21][OH:22])=[CH:17][CH:16]=1.C(=O)([O-])[O-].[K+].[K+].C(O)(=O)CC(CC(O)=O)(C(O)=O)O>CN(C)C=O>[CH3:1][C:2]1[CH:6]=[C:5]([C:7]2[CH:8]=[CH:9][CH:10]=[CH:11][CH:12]=2)[N:4]([CH2:14][C:15]2[CH:20]=[CH:19][C:18]([CH2:21][OH:22])=[CH:17][CH:16]=2)[N:3]=1
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 4

HCID 311Citric AcidHCID 11430Potassium CarbonateHCID 5107660[4-(Chloromethyl)phenyl]methanolHCID 178422627HCID 178422627, compound

Product 1

HCID 23159949{4-[(3-methyl-5-phenyl-1H-pyrazol-1-yl)methyl]phenyl}methanolYield 61.1%

Reagents, catalysts & solvents 1

HCID 6228
Dimethylformamide
Solvent

Conditions

Temperature
120 °C

Procedure

A mixture of 3-methyl-5-phenyl-1H-pyrazole (760 mg, 5.0 mmol), [4-(chloromethyl)phenyl]methanol (850 mg, 5.43 mmol), potassium carbonate (1.38 g, 10.0 mmol) and N,N-dimethylformamide (20 mL) was stirred at 120° C. for 1 hr. The reaction mixture was poured into 10% aqueous citric acid solution, and the mixture was extracted with ethyl acetate. The ethyl acetate layer was dried using a Presep Dehydration tube (manufactured by Wako Pure Chemical Industries, Ltd.) and concentrated. The residue was purified by silica gel column chromatography (10%-80% ethyl acetate/hexane) to give the title compound (850 mg, yield 61%) as colorless crystals. 1H NMR (CDCl3) δ: 2.21 (3H, s), 4.66 (2H, s), 5.33 (2H, s), 6.38 (1H, s), 7.13 (2H, d, J=8.1 Hz), 7.27-7.34 (3H, m), 7.34-7.42 (2H, m), 7.77-7.83 (2H, m).

Workup

  1. extractionthe mixture was extracted with ethyl acetate
  2. dry with materialThe ethyl acetate layer was dried
  3. concentrationconcentrated
  4. customThe residue was purified by silica gel column chromatography (10%-80% ethyl acetate/hexane)

Sources & evidence

ORD record
ord-0674c350afe14e00a015f4f0eb24026e
Source dataset
uspto-grants-2009_04
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US07517910B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes