Aerobic Ru-catalyzed direct C2-olefination of N-heteroarenes with alkenes directed by a removable N-dimethylcarbamoyl group
作者:Luo-Qiang Zhang、Shiping Yang、Xiaolei Huang、Jingsong You、Feijie Song
DOI:10.1039/c3cc44787a
日期:——
A highly efficient and selective Ru-catalyzed direct C2-olefination of indoles, pyrroles, and carbazoles assisted by a removable N-dimethylcarbamoyl group has been developed by using O2 as the terminal oxidant. Both electron-deficient and unactivated alkenes are applicable to the protocol.
Ruthenium-Catalyzed Regioselective C2 Alkenylation of Indoles and Pyrroles via C–H Bond Functionalization
作者:Bin Li、Jianfeng Ma、Weijia Xie、Haibin Song、Shansheng Xu、Baiquan Wang
DOI:10.1021/jo401579m
日期:2013.9.20
An efficient ruthenium-catalyzed oxidative coupling of indoles and pyrroles with various alkenes at the C2-position assisted by employing the N,N-dimethylcarbamoyl moiety as a directing group is reported. The catalytic reaction proceeds in an excellent regio- and stereoselective manner.
An efficient method for the synthesis of 3‐alkylated indoles is described. The oxidative cross‐couplingreaction of diphenylmethane derivatives with indoles at the C‐3 position was achieved employing the N,N‐dimethylcarbamoyl moiety as an auxiliary group in the presence of iron(II) chloride (FeCl2) and 2,3‐dichloro‐5,6‐dicyanoquinone (DDQ).
Synthesis and C2-functionalization of indoles with allylic acetates under rhodium catalysis
作者:Mirim Kim、Jihye Park、Satyasheel Sharma、Sangil Han、Sang Hoon Han、Jong Hwan Kwak、Young Hoon Jung、In Su Kim
DOI:10.1039/c3ob41828f
日期:——
Tandem rhodium-catalyzed oxidative allylation and annulation of acetanilides with allyl acetate to afford the corresponding indoles are described. In addition, the site-selective C2 allylation, crotylation and prenylation of indoles using allylic acetates under rhodium catalysis are reported.
Rhodium-Catalyzed C2-Alkylation of Indoles with Cyclopropanols Using <i>N</i>,<i>N</i>-Dialkylcarbamoyl as a Traceless Directing Group
作者:Kuppan Ramachandran、Pazhamalai Anbarasan
DOI:10.1021/acs.orglett.2c02527
日期:2022.9.23
An efficient rhodium-catalyzed synthesis of C2-alkylated NH-free indoles has been achieved from substituted indoles and cyclopropanols. The reaction allows the synthesis of various C2-alkylated products in good to excellent yield. Important features of the method include the use of a N,N-dialkylcarbamoyl group as a traceless directing group, C–H/C–C bond functionalization, good functional group tolerance
已经从取代的吲哚和环丙醇实现了有效的铑催化合成 C2-烷基化的无 NH 吲哚。该反应允许以良好至优异的产率合成各种 C2 烷基化产物。该方法的重要特点包括使用N,N-二烷基氨基甲酰基作为无痕导向基团,C-H/C-C键官能化,良好的官能团耐受性,适用范围广,可合成吡咯并[1,2- a ]吲哚,并鉴定潜在的中间体。