Hydrochloric Acid → F 1893

HRID 2224718

Reaktionsgleichung

Reaktionsgleichung von HRID 2224718
C[O:2][C:3]([C:5]1[CH:10]=[CH:9][C:8]([C:11]2[CH:16]=[CH:15][CH:14]=[CH:13][C:12]=2[Cl:17])=[CH:7][CH:6]=1)=[O:4].[OH-].[Na+].Cl>C1COCC1>[Cl:17][C:12]1[CH:13]=[CH:14][CH:15]=[CH:16][C:11]=1[C:8]1[CH:9]=[CH:10][C:5]([C:3]([OH:4])=[O:2])=[CH:6][CH:7]=1

Komponenten

5

Edukt 3

HCID 313Hydrochloric AcidHCID 14798Sodium HydroxideHCID 1393555Methyl 2'-chloro-1,1'-biphenyl-4-carboxylate

Produkt 1

HCID 160722F 1893Ausbeute 67 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

Combine methyl-4-bromobenzoate (1.0 g, 4.65 mmol), 2-chlorophenylboronic acid (799 mg, 5.1 mmol), Pd(OAc)2 (51 mg, 0.46 mmol) and sodium carbonate (1.5 g, 13.9 mmol) in DMF (20 mL) and water (2.0 mL) with stirring. Purge the reaction mixture with argon, add triphenylphosphine (61 mg, 0.23 mmol) and purge again with argon. Place the sealed reaction in an oil bath maintained at 80° C. and allow to stir for 1 hour. Cool the reaction to room temperature, dilute with ethyl acetate and filter through a short plug of celite with additional ethyl acetate. Wash the organics with water, dry over MgSO4, filter and evaporate. Purification by flash column chromatography yields 2′-chlorobiphenyl-4-carboxylic acid methyl ester as a yellow solid. Dissolve the purified ester in THF (0.25M) and add an equal volume of 1M NaOH. Stir vigorously at room temperature for 15 hours. Upon completion, acidify the reaction with conc. HCl and extract with ethyl acetate. Evaporation of the solvent yields 762 mg (67%) of the title compound. MS (ES): m/z 231.1 (M−H).

Aufarbeitung

  1. extractionextract with ethyl acetate
  2. customEvaporation of the solvent

Quellen und Nachweise

ORD-Eintrag
ord-bfd75b58640f426dbf19fb5dd4cae080
Quelldatensatz
uspto-grants-2008_05
Patentnummer
US07378447B2

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