I<sub>2</sub>O<sub>5</sub>-Mediated Iodocyclization Cascade of <i>N</i>-(1-Arylallyl)pyridine-2-amines with Concomitant C═C Bond Cleavage: A Synthesis of 3-Iodoimidazo[1,2-<i>a</i>]pyridines
作者:Bingwei Zhou、Yuan Yuan、Hongwei Jin、Yunkui Liu
DOI:10.1021/acs.joc.9b00765
日期:2019.5.3
A facile method for the synthesis of 3-iodoimidazo[1,2-a]pyridines has been successfully developed involving an I2O5-mediated iodocyclization cascade of N-(1-arylallyl)pyridin-2-amines with concomitant C═Cbondcleavage. Preliminary mechanistic studies reveal that this protocol might undergo an oxidative cyclization/decarboxylation/iodination sequence in which I2O5 is used as both an oxidant and an
已成功开发了一种简便的合成3-碘咪唑并[1,2- a ]吡啶的方法,该方法涉及I 2 O 5介导的N-(1-芳基烯丙基)吡啶-2-胺与C═C的碘环化级联反应键断裂。初步的机理研究表明,该方案可能会经历氧化环化/脱羧/碘化过程,其中I 2 O 5既用作氧化剂,又用作碘源。本协议具有衬底范围广,操作简单和无金属条件的优点。