Pyrrolo[3,4-<i>c</i>]pyrazole Synthesis via Copper(Ι) Chloride-Catalyzed Oxidative Coupling of Hydrazones to Maleimides
作者:Jia-Nan Zhu、Wen-Kang Wang、Ze-Hui Jin、Qian-Kun Wang、Sheng-Yin Zhao
DOI:10.1021/acs.orglett.9b01641
日期:2019.7.5
A variety of pyrrolo[3,4-c]pyrazole derivatives from readily available aldehyde hydrazones and maleimides via direct oxidative coupling under radical cascade reaction have been reported. This method offers satisfactory chemical yields and good functional group compatibility. Moreover, this practical approach is catalyzed by CuCl utilizing air as the oxidant and some control experiments were performed
已经报道了在自由基级联反应下通过直接氧化偶合从易得的醛和马来酰亚胺得到的各种吡咯并[3,4- c ]吡唑衍生物。该方法提供令人满意的化学产率和良好的官能团相容性。此外,该实用方法是通过以空气为氧化剂的CuCl催化的,并进行了一些控制实验以阐明其机理。