A copper-catalyzed one-pot synthesis of 2,3-dihydroquinazolin-4(1H)-ones with diboronic acid as a reductant in an aqueous medium is described. Various 2,3-dihydroquinazolin-4(1H)-ones were prepared with good functional-group tolerance in good yields under mild conditions from readily available 2-nitrobenzonitriles and various carbonyl compounds.

中文翻译：

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铜催化一锅法合成 2,3-二氢喹唑啉-4(1H)-酮，由 2-硝基苯甲腈和羰基化合物在甲醇-水中由二硼酸介导

描述了铜催化的 2,3-二氢喹唑啉-4(1H)-酮与二硼酸作为还原剂在水性介质中的一锅法合成。各种 2,3-二氢喹唑啉-4(1H)-酮在温和条件下从容易获得的 2-硝基苯甲腈和各种羰基化合物制备，具有良好的官能团耐受性和良好的产率。