Sodium Hydroxide → 3-{3'-[3-(4-Butylphenyl)-1-methylureido]biphenyl-4-yl}propanoic acid

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

380 mg (10 mmol, 10 eq) of sodium hydroxide are added to a solution of 436 mg (1.0 mmol, 1 eq) of ethyl 3-{3′-[3-(4-butylphenyl)-1-methylureido]biphenyl-4-yl}propanoate in 20 mL of ethanol. The reaction mixture is heated at 50° C. for 3 hours. The reaction medium is evaporated to dryness, taken up in water, acidified with 1N hydrochloric acid solution and extracted with ethyl acetate. The organic phases are combined, washed with water and dried over sodium sulfate. The solvent is evaporated off and 352 mg of 3-{3′-[3-(4-butylphenyl)-1-methylureido]biphenyl-4-yl}propanoic acid are obtained in the form of white crystals (m.p.=157-158° C.). Yield=86%

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