The title compounds, 1,2-dialkyl-benzimidazole-5(6)-carboxylicacids 34–45 were prepared at four steps; 1) preparation of mono amide derivatives 1–11 by the reaction of methyl 3,4-diaminobenzoate and substituted phenyl or phenoxyacetic acid chlorides; 2) preparation of the methyl benzimidazolecarboxyl-ates 12–22, with zinc chloride and dry hydrogen chloride gas; 3) alkaline hydrolysis of the esters