Rhodium(III)-Catalyzed Oxidative Allylic C–H Indolylation via Nucleophilic Cyclization
作者:Jiaqiong Sun、Kuan Wang、Peiyuan Wang、Guangfan Zheng、Xingwei Li
DOI:10.1021/acs.orglett.9b01553
日期:2019.6.21
Reported herein is a mild synthesis of 3-allylindoles via Rh(III)-catalyzed allylic C–H activation of olefins and coupling with o-alkynylanilines. The reaction proceeded via initial nucleophilic cyclization of o-alkynylanilines followed by oxidative coupling with allylic C–H bonds via an η3-allyl intermediate.
Rh(III)-Catalyzed Cascade Annulation/C–H Activation of <i>o</i>-Ethynylanilines with Diazo Compounds: One-Pot Synthesis of Benzo[<i>a</i>]carbazoles via 1,4-Rhodium Migration
作者:Songjin Guo、Kai Yuan、Meng Gu、Aijun Lin、Hequan Yao
DOI:10.1021/acs.orglett.6b02534
日期:2016.10.21
A Rh(III)-catalyzed cascade annulation/C–H activation of o-ethynylanilines with diazocompounds has been developed. This concise method allows for the rapid formation of a number of benzo[a]carbazoles in high yields, exhibiting good functional group tolerance and scalability. The key to the success of this approach involves one C–N bond and two C–C bond formation, and an aryl-to-aryl 1,4-rhodium migration
已开发了一种重氮化合物催化的Rh(III)催化邻乙炔基苯胺的级联环化/ CH活化。这种简洁的方法可以高产率快速形成许多苯并[ a ]咔唑,表现出良好的官能团耐受性和可扩展性。该方法成功的关键在于一个C–N键和两个C–C键的形成,以及芳基到芳基1,4-铑的迁移。
Palladium-Catalyzed Synthesis of Functionalized Indoles by Acylation/Allylation of 2-Alkynylanilines with Three-Membered Rings
作者:Weiliang Yuan、Xiaojiao Li、Zisong Qi、Xingwei Li
DOI:10.1021/acs.orglett.2c00246
日期:2022.3.25
Palladium-catalyzed synthesis of 3-acyl and -allyl indoles has been realized by merging nucleophilic cyclization of ortho-alkynylanilines with ring opening of three-memberedrings such as cyclopropenones and gem-difluorinated cyclopropanes. These functionalized indoles were obtained in moderate to high yields with high stereoselectivity in both cases. This protocol provides an alternative method toward
Palladium-catalyzed nucleomethylation of alkynes for synthesis of methylated heteroaromatic compounds
作者:Xi Yang、Gang Wang、Zhi-Shi Ye
DOI:10.1039/d2sc03294e
日期:——
efficient palladium-catalyzed nucleomethylation of alkynes for the simultaneous construction of the heteroaromatic ring and methyl group. The 3-methylindoles, 3-methylbenzofurans and 4-methylisoquinolines were obtained in moderate to excellent yields. Notably, this methodology was employed as a key step for synthesis of a pregnane X receptor antagonist, zindoxifene, bazedoxifene and AFN-1252. The kinetic studies
在此,我们公开了一种新颖且有效的钯催化炔烃核甲基化,用于同时构建杂芳环和甲基。3-甲基吲哚、3-甲基苯并呋喃和4-甲基异喹啉以中等至优异的产率获得。值得注意的是,该方法被用作合成孕烷 X 受体拮抗剂、津多昔芬、巴多昔芬和 AFN-1252 的关键步骤。动力学研究表明,还原消除可能是决定速率的步骤。
Palladium-catalyzed domino carbonylative cyclization to access functionalized heterocycles
A novel palladium-catalyzed domino carbonylative cyclization of alkene-tethered indole derivatives with alkyne-tethered nucleophiles has been developed, which provides a straightforward and efficient platform for the rapid construction of functionalized heterocycles. By using benzene-1,3,5-triyl triformate (TFBen) as the CO source, this domino reaction proceeded smoothly with the consecutive formation
已经开发了一种新型的钯催化多米诺羰基环化烯烃束缚的吲哚衍生物与炔烃束缚的亲核试剂,这为快速构建功能化杂环提供了一个简单有效的平台。以苯-1,3,5-三甲酸三酯(TFBen)为CO源,该多米诺反应顺利进行,连续形成三个C C键和一个CX键,得到多种生物学相关的吲哚[2,1 - a ]异喹啉-吲哚和吲哚[2,1 - a ]异喹啉-二氢苯并呋喃衍生物,收率良好。