(+-)-Methionine → 3'-Hydroxy-[1,1'-biphenyl]-3-carboxylic acid

Beteiligte Stoffe

Reaktionsschritte

A suspension of 3'-methoxy-3-biphenylcarboxylic acid (4.1 g) and DL-methionine (26.7 g) in methanesulfonic acid (116 ml) was stirred at room temperature for 22 hours, diluted with water, and extracted three times with diethyl ether. The extracts were combined, washed with brine, dried over magnesium sulfate, and evaporated in vacuo. The residue was crystallized from n-hexane to afford 3'-hydroxy-3-biphenylcarboxylic acid (3.59 g) as a colorless powder.

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