作者:Hakan Göker、Süreyya Ölgen、Rahmiye Ertand、HÜLya Akgün、Süheyla Özbey、Engin Kendi、GÜL Topçu
DOI:10.1002/jhet.5570320617
日期:1995.11
The title compounds, 1,2-dialkyl-benzimidazole-5(6)-carboxylic acids 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
标题化合物1,2-二烷基苯并咪唑-5(6)-羧酸34-45的制备分为四个步骤;1)通过3,4-二氨基苯甲酸甲酯与取代的苯基或苯氧乙酸氯的反应制备单酰胺衍生物1-11;2)用氯化锌和干燥的氯化氢气体制备苯并咪唑甲酸甲酯12-22。3)酯23-33的碱水解;4)在碱性介质中用苄基或对氟苄基溴取代咪唑环。2-芳基苯并咪唑-5-(6) -羧酸50-53制备通过 3,4-二氨基苯甲酸和芳香醛与铜离子的氧化缩合反应