双铑(Ⅱ)/Xantphos催化的C—H官能团化/烯丙基烷基化串联:从N-芳基-α-重氮-β-酮酯简便制备3-酰基-3-烯丙基氧化吲哚衍生物  

Dirhodium/Xantphos-Catalyzed Tandem C—H Functionalization/Allylic Alkylation:Direct Access to 3-Acyl-3-allyl Oxindole Derivatives from N-Aryl-α-diazo-β-keto Amides

作　　者：李芳洁 卢斌 刘阳 王晓明[2,3] Li Fangjie;Lu Bin;Liu Yang;Wang Xiaoming(Hunan Provincial Key Laboratory of Tumor Microenvironment Responsive Drug Research,Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study,School of Pharmacology,Hengyang Medical School,University of South China,Hengyang,Hunan 421001;State Key Laboratory of Organometallic Chemistry,Center for Excellence in Molecular Synthesis,Shanghai Institute of Organic Chemistry,Chinese Academy of Sciences,Shanghai 200032;School of Chemistry and Materials Science,Hangzhou Institute for Advanced Study,University of Chinese Academy of Sciences,Hangzhou 310024)

机构地区：[1]肿瘤微环境响应药物研究湖南省重点实验室,湖南省分子靶标新药研究,南华大学衡阳医学院药学院协同创新中心,湖南衡阳421001 [2]中国科学院上海有机化学研究所,金属有机化学国家重点实验室,分子合成科学卓越创新中心,上海200032 [3]中国科学院大学杭州高等研究院,化学与材料科学学院,杭州310024

出　　处：《有机化学》2022年第10期3390-3397,共8页Chinese Journal of Organic Chemistry

基　　金：国家自然科学基金(No.21821002)资助项目.

摘　　要：从易于获得的N-芳基-α-重氮-β-酮酰胺和烯丙基化合物出发,利用新型的[Rh2]/Xantphos催化体系一锅法合成了各种3-酰基-3-烯丙基的氧化吲哚衍生物.这项工作的优点包括操作简便、反应条件温和、官能团兼容性良好和产物易于衍生化等.初步的机理研究表明,该反应可能经历卡宾诱导的C—H官能团化和Rh(Ⅱ)/Xantphos催化的烯丙基烷基化串联过程.此外,选择Xantphos作为配体对于实现体系中的烯丙基烷基化过程至关重要.A novel[Rh2]/Xantphos-catalyzed one-pot sequence for the synthesis of diverse 3-acyl-3-allyl oxindole derivatives from easily available N-aryl-α-diazo-β-keto amides and allylic compounds has been developed.The notable features of this work include ease of operation,mild reaction conditions,good functional group compatibility and facile diversification of the products.Preliminary mechanistic studies indicate a tandem carbene-induced C—H functionalization and Rh(II)/Xantphos catalyzed allylic alkylation process.Moreover,the choice of Xantphos as the ligand is critical to enable the allylic alkylation process in this catalysis.

关 键 词：双铑络合物 重氮化合物 氧化吲哚 季碳中心 接力催化 

分 类 号：O626[理学—有机化学]