Synthesis of 2‐substituted benzimidazoles by iodine‐mediated condensation of orthoesters with 1,2‐phenylenediamines

Zhan‐Hui Zhang, Jian‐Jiong Li, Yuan‐Zhe Gao, Yu‐Heng Liu

doi:10.1002/jhet.5570440642

Synthesis of 2‐substituted benzimidazoles by iodine‐mediated condensation of orthoesters with 1,2‐phenylenediamines

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説明

<jats:title>Abstract</jats:title><jats:p><jats:chem-struct-wrap><jats:chem-struct><jats:graphic xmlns:xlink="http://www.w3.org/1999/xlink" mimetype="image/gif" position="anchor" specific-use="enlarged-web-image" xlink:href="graphic/must001.gif"><jats:alt-text>magnified image</jats:alt-text></jats:graphic></jats:chem-struct></jats:chem-struct-wrap></jats:p><jats:p>Iodine was found to be an efficient catalyst for the synthesis of 2‐substituted benzimidazoles by the condensation of orthoesters and 1,2‐phenylenediamines in good to excellent yields under mild reaction conditions.</jats:p>