Cl.NCC[C:5]1[CH:13]=[CH:12][C:8]([C:9]([OH:11])=[O:10])=[CH:7][CH:6]=1.C(OC1C=CC(Cl)=CC=1C(Cl)=O)C>[OH-].[Na+].CC(C)=O.O>[C:9]([OH:11])(=[O:10])[C:8]1[CH:12]=[CH:13][CH:5]=[CH:6][CH:7]=110 g of 4-(2-aminoethyl)-benzoic acid hydrochloride were dissolved in 60 ml of 2 N-sodium hydroxide solution and, after addition of 75 ml of acetone, a solution of 11 g of 2-ethoxy-5-chloro-benzoylchloride in 20 ml of acetone was added dropwise, while stirring. Stirring was continued for 2 hours, the mixture was diluted with water, filtered and acidified with dilute hydrochloric acid. After filtration with suction, the product was recrystallized from ethanol. The 4-(2-<2-ethoxy-5-chloro-benzamido>-ethyl)-benzoic acid obtained was found to melt at 180° C.
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