Sodium Bicarbonate → N-[5-(5,6-Dimethoxy-3-methyl-1,4-benzoquinon-2-yl)methyl-2-hydroxybenzoyl]-4-aminobenzoic Acid

HRID 1830400Notes

Reaction equation

HRID 1830400 reaction equation
[CH3:1][O:2][C:3]1[C:4](=[O:36])[C:5]([CH3:35])=[C:6]([CH2:12][C:13]2[CH:14]=[CH:15][C:16]([O:31]C(=O)C)=[C:17]([CH:30]=2)[C:18]([NH:20][C:21]2[CH:29]=[CH:28][C:24]([C:25]([OH:27])=[O:26])=[CH:23][CH:22]=2)=[O:19])[C:7](=[O:11])[C:8]=1[O:9][CH3:10].C(=O)([O-])O.[Na+]>CO.Cl>[CH3:1][O:2][C:3]1[C:4](=[O:36])[C:5]([CH3:35])=[C:6]([CH2:12][C:13]2[CH:14]=[CH:15][C:16]([OH:31])=[C:17]([CH:30]=2)[C:18]([NH:20][C:21]2[CH:29]=[CH:28][C:24]([C:25]([OH:27])=[O:26])=[CH:23][CH:22]=2)=[O:19])[C:7](=[O:11])[C:8]=1[O:9][CH3:10]

Participants

5

Reactant 2

HCID 516892Sodium BicarbonateHCID 22054291N-[5-(5,6-Dimethoxy-3-methyl-1,4-benzoquinon-2-yl)methyl-2-acetoxybenzoyl]-4-aminobenzoic Acid

Product 1

HCID 22054186N-[5-(5,6-Dimethoxy-3-methyl-1,4-benzoquinon-2-yl)methyl-2-hydroxybenzoyl]-4-aminobenzoic AcidYield 77%

Reagents, catalysts & solvents 2

HCID 313Hydrochloric AcidSolventHCID 887MethanolSolvent

Procedure

N-[5-(5,6-Dimethoxy-3-methyl-1,4-benzoquinon-2-yl)methyl-2-acetoxybenzoyl]-4-aminobenzoic acid (0.070 g, 0.142 mmol) was dissolved in methanol (3 ml) and after adding thereto an aqueous saturated sodium hydrogencarbonate solution (1.5 ml), the solution was stirred at room temperature for 3 hours. After the completion of reaction, the reaction solution was diluted with a 2N hydrochloric acid solution and the aqueous layer was rendered acidic (pH=1 to 2) and then extracted with ethyl acetate. The extract was washed with water and then dried, and the solvent was removed by distillation. The obtained residue was purified by preparative thin-layer chromatography (chloroform:methanol=10:1) and then recrystallized from methanol to obtain the titled compound (0.049 g, 0.109 mmol, 77%).

Workup

  1. additionafter adding
  2. customAfter the completion of reaction
  3. extractionextracted with ethyl acetate
  4. washThe extract was washed with water
  5. customdried
  6. customthe solvent was removed by distillation
  7. customThe obtained residue was purified by preparative thin-layer chromatography (chloroform:methanol=10:1)
  8. customrecrystallized from methanol

Sources & evidence

ORD record
ord-f4c0639474704f2fb7383223372ad590
Source dataset
uspto-grants-2006_06
Patent number
US07064124B2

Reaction notes

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