Iodine-Catalyzed Oxidative Functionalization of Azaarenes with Benzylic C(sp<sup>3</sup>)–H Bonds via N-Alkylation/Amidation Cascade: Two-Step Synthesis of Isoindolo[2,1-<i>b</i>]isoquinolin-7(5<i>H</i>)-one
作者:Wen-Kun Luo、Xin Shi、Wang Zhou、Luo Yang
DOI:10.1021/acs.orglett.6b00646
日期:2016.5.6
An efficient and practical iodine-catalyzed oxidative functionalization of azaarenes with benzylicC–Hbonds via an N-alkylation and amidation cascade is developed to provide isoquinolin-1(2H)-ones. This method utilizes readily available unfunctionalized azaarenes and methylarenes as starting materials and proceeds under metal-free conditions with good to excellent yields, avoiding the use of expensive
通过N-烷基化和酰胺化级联反应,开发了一种有效且实用的碘催化的氮杂芳烃与苄基CH键的氧化功能化反应,以提供异喹啉-1(2 H)-one。该方法利用容易获得的未官能化的氮杂芳烃和甲基芳烃作为起始原料,并在无金属条件下以良好或优异的收率进行,避免了使用昂贵的贵金属催化剂以及避免产生卤化物和金属废物。该反应的合成效用以异吲哚并[2,1 - b ]异喹啉-7(5 H)-one的简明两步合成为例。
Ruthenium-Mediated Dual Catalytic Reactions of Isoquinoline <i>via</i>
C−H Activation and Dearomatization for Isoquinolone
作者:Ting-Hsuan Wang、Wei-Chih Lee、Tiow-Gan Ong
DOI:10.1002/adsc.201600313
日期:2016.9.1
We have unraveled the ruthenium‐promoted prototype reaction based on C(sp2)−C(sp3) bond formation through the reigoselective C−Hactivation of isoquinoline and pyridine derivatives with various alkyl halides, leading to 1‐substituted isoquinoline products in good yield. This C−H catalytic reaction did not rely on chelation assistance of the directing group of the substrates. The dimer [RuCl2(p‐cymene)]2
我们已经解开了钌促进的基于C(sp 2)-C(sp 3)键形成的原型反应,该反应是通过对异喹啉和吡啶衍生物与各种卤代烷进行区域选择性C H活化而形成的,从而得到了1取代的异喹啉产品屈服。该CH催化反应不依赖于底物的导向基团的螯合辅助。二聚体[RuCl 2(p- cymene)] 2与N-杂环卡宾配体,金刚烷羧酸和K 2 CO 3碱在N中的结合最佳的条件是在150°C下使用2-甲基-2-吡咯烷酮溶液。同时,我们还能够通过添加水来化学调节反应模式以脱芳香化,从而制得异喹诺酮产品。该反应方法不适用于其他含氮杂芳烃,如哒嗪和嘧啶。
Base-promoted aerobic oxidation of <i>N</i>-alkyl iminium salts derived from isoquinolines and related heterocycles
作者:Li-Gang Bai、Yue Zhou、Xin Zhuang、Liang Zhang、Jian Xue、Xiao-Long Lin、Tian Cai、Qun-Li Luo
DOI:10.1039/c9gc03629f
日期:——
scope, low cost, feasibility of scale up, wide availability of reagents, and green reaction conditions, this method shows great potential for preparing isoquinolones and related compounds. The method was applied for atom- and step-economical total synthesis of natural products such as norketoyobyrine.
Direct Synthesis of N‐Alkyl‐2‐Pyridones Using 2‐Halogenated Pyridines
作者:Xia Chen、Jianyi Shi、Yuqun Lin、Yibiao Li、Shaohua Jiang、Tianxiang Chen、Zhongzhi Zhu、Aijun Ma
DOI:10.1002/ejoc.202301184
日期:2024.2.12
This study presents a method for synthesizing pyridine, quinoline, and isoquinoline ketones from 2-halogenated N-heterocycles under mild conditions. The use of H2O as both solvent and oxygen source makes the reaction environmentally friendly, with broad substrate applicability and high functional group tolerance.