Cu(OTf)<sub>2</sub>-Catalyzed Intramolecular Radical Cascade Reactions for the Diversity-Oriented Synthesis of Quinoline-Annulated Polyheterocyclic Frameworks
作者:Shuo Yuan、Jingya Zhang、Danqing Zhang、Donghui Wei、Jiahui Zuo、Jian Song、Bin Yu、Hong-Min Liu
DOI:10.1021/acs.orglett.1c00129
日期:2021.2.19
Herein, we report the first Cu(OTf)2-catalyzed intramolecular radical cascade reactions that enable the diversity-orientedsynthesis of quinoline-annulated polyheterocyclic compounds (7 unique scaffolds, 66 examples) in an efficient manner. This work demonstrates an alternative route to access the natural product- and druglike compound collection with high levels of structural diversity and novelty.
Synthesis and catalytic application of magnesium complexes bearing pendant indolyl ligands
作者:Kuo-Fu Peng、Yun Chen、Chi-Tien Chen
DOI:10.1039/c5dt01173f
日期:——
indole-based ligand precursors [HIndPhR, R = methoxy, HIndPhOMe (2a); thiomethoxy, HIndPhSMe (2b); and N,N′-dimethylamino, HIndPhNMe2 (2c)] have been synthesized via Sonogashira and cyclization reactions with moderate to high yield. Reactions of these ligand precursors with 0.6 equivalent of MgnBu2 in THF afforded the magnesium bis-indolyl complexes 3a–3c, respectively. All the ligand precursors and
三种新型的基于吲哚的配体前体[HIndPh R,R =甲氧基,HIndPh OMe(2a); 硫代甲氧基,HIndPh SMe(2b); 和Ñ,Ñ ' -二甲基氨基,HIndPh NME2(2C)]已被合成通过的Sonogashira和环化反应的中度至高产率。这些配体前体与0.6当量的Mg n Bu 2在THF中的反应提供了镁双吲哚基配合物3a-3c, 分别。所有配体前体和相关的镁配合物已通过NMR光谱和元素分析进行了表征。报道了化合物3a和3b的分子结构。在最佳条件下,化合物3a在BnOH存在下,对L-丙交酯和ε-己内酯的开环聚合反应显示出有效的催化活性。
Biradicals/Zwitterions from Thermolysis of Enyne−Isocyanates. Application to the Synthesis of 2(1<i>H</i>)-Pyridones, Benzofuro[3,2-<i>c</i>]pyridin-1(2<i>H</i>)-ones, 2,5-Dihydro-1<i>H</i>-pyrido[4,3-<i>b</i>]indol-1-ones, and Related Compounds
作者:Hongbin Li、Hua Yang、Jeffrey L. Petersen、Kung K. Wang
DOI:10.1021/jo049716t
日期:2004.6.1
leading to benzofuro[3,2-c]quinolin-6(5H)-one (20), 5,11-dihydro-11-methyl-6H-indolo[3,2-c]quinolin-6-one (25), benzofuro[3,2-c]pyridin-1(2H)-one 44, 2,5-dihydro-2,5-dimethyl-1H-pyrido[4,3-b]indol-1-one 46, and relatedcompounds. Interestingly, thermolysis of 37f bearing a 2-(methoxymethyl)phenyl substituent at the alkynyl terminus produced the unexpected benzopyranopyridine 56 as the major product in a process
<i>N</i>-Methyl Transfer Induced Copper-Mediated Oxidative Diamination of Alkynes
作者:Hon Eong Ho、Kazuaki Oniwa、Yoshinori Yamamoto、Tienan Jin
DOI:10.1021/acs.orglett.6b01067
日期:2016.5.20
diamination of bis(2-aminophenyl)acetylene for the synthesis of the structurally intriguing π-conjugated polyheterocyclic scaffold, 5,10-dihydroindolo[3,2-b]indole (DHII), has been developed under Cu(hfacac)2/O2 oxidation systems. The structure design of bis(2-aminophenyl)acetylene bearing both N,N-dimethylamine and primary amine groups is crucial for constructing the corresponding DHII scaffold. Notably, an
在Cu(hfacac)下开发了一种新颖的双(2-氨基苯基)乙炔分子内氧化加氨方法,用于合成结构吸引人的π-共轭多杂环骨架5,10-二氢吲哚[3,2- b ]吲哚(DHII)。 )2 / O 2氧化系统。带有N,N-二甲基胺和伯胺基团的双(2-氨基苯基)乙炔的结构设计对于构建相应的DHII支架至关重要。值得注意的是,分子间ñ -甲基从氮原子转移Ñ,Ñ-将二甲胺转化为伯胺,这对于成功实施本发明的成环方法是至关重要的步骤。