A New Focused Microwave Approach to the Synthesis of Amino-Substituted Pyrroloisoquinolines and Pyrroloquinolines via a Sequential Multi-Component Coupling Process
作者:Steven Ley、Mark Hopkin、Ian Baxendale
DOI:10.1055/s-2008-1067048
日期:2008.6
A multi-component reaction has been developed allowing direct access to pyrroloisoquinolines and pyrroloquinolines with new, electron-rich substitution patterns. The synthesised amino-substituted heterocyclic compounds and intermediates involved in their formation represent novel compounds. Focused microwave irradiation was used extensively to allow simple access to a wide temperature range using low boiling point solvents.
Light-driven selective aerobic oxidation of (iso)quinoliniums and related heterocycles
作者:Meimei Zhou、Keyang Yu、Jianxin Liu、Weimei Shi、Yingming Pan、Haitao Tang、Xiangjun Peng、Qian Liu、Hengshan Wang
DOI:10.1039/d1ra01226f
日期:——
Selective C1–H/C4–H carbonylation of N-methylene iminium salts, catalyzed by visible-light photoredox and oxygen in the air, has been reported. A ruthenium complex acts as a chemical switch to conduct two different reaction pathways and to afford two different kinds of products. In the absence of the ruthenium complex, the Csp2–H bondsadjacent to the nitrogenatoms are oxidized to α-lactams by the
Construction of C(sp<sup>2</sup>)–X (X = Br, Cl) Bonds through a Copper-Catalyzed Atom-Transfer Radical Process: Application for the 1,4-Difunctionalization of Isoquinolinium Salts
作者:Qiu Sun、Yuan-Yuan Zhang、Jing Sun、Ying Han、Xiaodong Jia、Chao-Guo Yan
DOI:10.1021/acs.orglett.7b03751
日期:2018.2.16
A highly efficient Cu-catalyzed 1,4-difunctionalization of isoquinolinium salts was developed with ether and X– (X = Br, Cl) as the halogen source under mild conditions. This transformation involves the combination of oxidative coupling and copper-catalyzed halogen atom-transfer radicalprocesses. This method not only provides an efficient way to prepare various substituted azaarenes but also achieves
Electrochemical regioselective selenylation/oxidation of <i>N</i>-alkylisoquinolinium salts <i>via</i> double C(sp<sup>2</sup>)–H bond functionalization
作者:Xiang Liu、Yajun Wang、Dan Song、Yuhan Wang、Hua Cao
DOI:10.1039/d0cc06778d
日期:——
An efficient, novel, and environmentally friendly electrochemical regioselective selenylation/oxidation of N-alkylisoquinolinium salts via double C(sp2)–H bond functionalization under undivided electrolytic conditions has been developed. A series of selenide isoquinolones were easily accessed through this sustainable and clean electrochemical system. The present protocol was further extended to afford
已开发了在不分开的电解条件下通过双C(sp 2)-H键官能化对N-烷基异喹啉鎓盐进行高效,新颖且环境友好的电化学区域选择性硒化/氧化的方法。通过这种可持续,清洁的电化学系统,很容易获得一系列硒化异喹诺酮。本方案进一步扩展为提供硒化物喹诺酮和1,3-二甲基-1 H-苯并[ d ]咪唑-2(3 H)-1。此外,抗病毒生物测定法表明化合物3j对烟草花叶病毒(TMV)表现出优异的抗病毒活性,其抑制率高达90%。
One-pot synthesis of 4-substituted isoquinolinium zwitterionic salts by metal-free C–H bond activation
作者:Hong Hou、Yuan Zhang、Chao-Guo Yan
DOI:10.1039/c2cc30708a
日期:——
The unprecedented isoquinolinium zwitterionic salts with an unusual C-4 substitution pattern were efficiently prepared via the multicomponent reaction of in situ formed N-benzylisoquinolinium bromide with aromatic aldehydes and cyclic 1,3-dicarbonyl compounds.