Hydrochloric Acid → 3-Chloro[1,1'-biphenyl]-4-carboxylic acid

HRID 1816667Notes

Reaction equation

HRID 1816667 reaction equation
[Cl:1][C:2]1[CH:11]=[C:10]([C:12]2[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=2)[CH:9]=[CH:8][C:3]=1[C:4]([O:6]C)=[O:5].[OH-].[Na+].Cl>CO>[Cl:1][C:2]1[CH:11]=[C:10]([C:12]2[CH:13]=[CH:14][CH:15]=[CH:16][CH:17]=2)[CH:9]=[CH:8][C:3]=1[C:4]([OH:6])=[O:5]

Participants

5

Reactant 3

HCID 313Hydrochloric AcidHCID 14798Sodium HydroxideHCID 22494112HCID 22494112, compound

Product 1

HCID 214874263-Chloro[1,1'-biphenyl]-4-carboxylic acid

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

0.30 g of methyl 2-chloro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolane-2-yl)benzoate, 0.19 g of bromobenzene, 57mg of 1,1-bis(diphenylphosphino)ferrocene dichloropalladium and 0.55 g of potassium carbonate were dissolved in 15 ml dimethoxyethane, and the mixture was heated under reflux for 1 hour. After cooling the reaction solution to room temperature, ethyl acetate and water were added thereto. The mixture was filtered through Celite, and the mother liquor was extracted with ethyl acetate. The organic layer was washed with brine, dried over anhydrous magnesium sulfate and the solvent was evaporated. The residue was subjected to silica gel column chromatography, and from fractions eluted with hexane-ethyl acetate (5:1), methyl 2-chloro-4-phenylbenzoate was obtained. Then, the resulting methyl 2-chloro-4-phenylbenzoate was dissolved in 4 ml methanol, and 2 ml of 1N sodium hydroxide was added, and the mixture was stirred at room temperature for 6 hours. The reaction mixture was ice-cooled and neutralized with 1N hydrochloric acid, followed by extracting with ethyl acetate. The organic layer was washed with brine, dried over anhydrous sodium sulfate and the solvent was evaporated, to give 0.12 g of 2-chloro-4-phenylbenzoic acid.

Workup

  1. temperaturecooled
  2. extractionby extracting with ethyl acetate
  3. washThe organic layer was washed with brine
  4. dry with materialdried over anhydrous sodium sulfate
  5. customthe solvent was evaporated

Sources & evidence

ORD record
ord-eb389e3baeac467bbe47ecab0a71d77b
Source dataset
uspto-grants-2005_04
Patent number
US06884821B1

Reaction notes

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