Hydrochloric Acid → 3-[2-(2,4-Dichloro-phenyl)-ethoxy]-4-ethoxy-benzoic Acid

Participants

Reaction Conditions

Reaction Steps

0.300 g (0.78 mmol) of 3-[2-(2,4-Dichlorophenyl)-ethoxy]-4-ethoxy-benzoic acid ethyl ester was dissolved in 10 ml of dioxan. 2N aqueous NaOH was added to the solution to give a pH of 13. The reaction solution was heated at 60° C. for 10 h. 5 ml water was added, followed by concentrated hydrochloric acid to give a pH of 1-2, whereupon the product precipitated from solution. The suspension was stirred for 30 min, and then the product was filtered off and dried under reduced pressure.

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