Chemoselective [3 + 2] annulation of oxime acetate with 2-aryl-3-ethoxycarbonyl-pyrroline-4,5-dione: an entry to pyrrolo[2,3-<i>b</i>]pyrrole derivatives
作者:Andhavaram Ramaraju、Atul Upare、Ewan W Blanch、Subashani Maniam、Balasubramanian Sridhar、Surendar Reddy Bathula、Chada Raji Reddy
DOI:10.1039/d1ob00990g
日期:——
A novel chemoselective [3 + 2] annulation reaction of easily accessible ketoxime acetate with 2-aryl-3-ethoxycarbonyl pyrroline-4,5-dione has been developed for the synthesis of unknown pyrrolo[2,3-b]pyrrole frameworks. This method involves copper-mediated N–O bond cleavage followed by the formation of carbon–carbon and carbon–nitrogen bonds. This operationally simple protocol provides broader functional
已经开发了一种易于获得的醋酸酮肟与 2-aryl-3-ethoxycarbonyl pyrroline-4,5-dione 的新型化学选择性 [3 + 2] 环化反应,用于合成未知的 pyrrolo[2,3- b ] 吡咯骨架。该方法涉及铜介导的 N-O 键断裂,然后形成碳-碳和碳-氮键。这种操作简单的协议提供了更广泛的功能组兼容性和良好的产量。