Substituted 6,11-ethano-6,11-dihydrobenzo[b] quinolizinium salts and
摘要:
替代的6,11-乙烷-6,11-二氢苯并[b]喹啉盐,含有它们的药物组合物,以及利用它们治疗神经退行性疾病或神经毒性损伤的方法,其中替代的6,11-乙烷-6,11-二氢苯并[b]喹啉盐具有以下结构式:##STR1## 其中:R.sup.1、R.sup.2、R.sup.3、R.sup.4、R.sup.5、R.sup.6、R.sup.7、X 和 p 如规范中所定义。
Light‐Promoted Minisci Coupling Reaction of Ethers and Aza Aromatics Catalyzed by Au/TiO
<sub>2</sub>
Heterogeneous Photocatalyst
作者:Zhanchong Li、Liangying Wu、Jiabao Guo、Yifei Shao、Yang Song、Yuzhou Ding、Li Zhu、Xiaoquan Yao
DOI:10.1002/cctc.202100298
日期:2021.8.20
light-promoted Minisci oxidative coupling reaction of ether and aza aromatics by using oxygen as green oxidant and only catalytic amount of acid as additive. The protocol shows a good functional group tolerance as well as good to excellent yields for various substrates. With mechanistic studies, Au/TiO2 nanocomposite proved to be an efficient photocatalyst to activate C−H bond via a SEO approach of heteroatoms
An efficient protocol for the Cα-H heteroarylation of ethers, amides, and alcohols using air and light under mild conditions is described. The reaction is applicable to a wide spectrum of functional groups. The generation of C-radicals via photoinduced aerobic oxidation of ethers, amides, and alcohols is the key feature of the process. Control experiments suggest a radical pathway for the reaction
描述了在温和条件下使用空气和光对醚、酰胺和醇进行 Cα - H 杂芳基化的有效方案。该反应适用于广泛的官能团。通过醚、酰胺和醇的光诱导有氧氧化产生 C-自由基是该过程的关键特征。对照实验表明该反应的自由基途径。
Direct Cα-heteroarylation of structurally diverse ethers via a mild N-hydroxysuccinimide mediated cross-dehydrogenative coupling reaction
作者:Shihui Liu、Aoxia Liu、Yongqiang Zhang、Wei Wang
DOI:10.1039/c6sc05697k
日期:——
An important challenge in the Cα-heteroarylation of ethers is the requirement of a large excess amount of ethers (that are used as solvents in many cases) to achieve effective transformations. This drawback has significantly restricted the Cα-heteroarylation of ethers to the use of simple and easily accessible ether substrates. To overcome this limitation, a new, efficient, N-hydroxysuccinimide (NHS)
A novel PIFA‐mediated cross‐dehydrogenativecoupling (CDC) reaction of N‐heteroarenes with cyclic ethers has been reported. The reaction utilizes simple and cheap ethanol as the promoter in the presence of visible light, which is mild and efficient and allows the facile transformation of a variety of complex and highly functionalized cyclic ethers into medicinally valuable Cα‐heteroarylated cyclic
Direct α-Arylation of Ethers through the Combination of Photoredox-Mediated CH Functionalization and the Minisci Reaction
作者:Jian Jin、David W. C. MacMillan
DOI:10.1002/anie.201410432
日期:2015.1.26
α‐arylation of cyclic and acyclic ethers with heteroarenes has been accomplished through the design of a photoredox‐mediatedCH functionalization pathway. Transiently generated α‐oxyalkyl radicals, produced from a variety of widely available ethers through hydrogen atom transfer (HAT), were coupled with a range of electron‐deficient heteroarenes in a Minisci‐type mechanism. This mild, visible‐light‐driven