Visible‐Light‐Enabled Direct Decarboxylative N‐Alkylation
作者:Vu T. Nguyen、Viet D. Nguyen、Graham C. Haug、Ngan T. H. Vuong、Hang T. Dang、Hadi D. Arman、Oleg V. Larionov
DOI:10.1002/anie.201916710
日期:2020.5.11
development of efficient and selective C-N bond-forming reactions from abundant feedstock chemicals remains a central theme in organic chemistry owing to the key roles of amines in synthesis, drug discovery, and materials science. Herein, we present a dual catalyticsystem for the N-alkylation of diverse aromatic carbocyclic and heterocyclic amines directly with carboxylicacids, by-passing their preactivation
Formal aromaticity transfer for palladium-catalyzed coupling between phenols and pyrrolidines/indolines
作者:Zihang Qiu、Jiang-Sheng Li、Chao-Jun Li
DOI:10.1039/c7sc02578e
日期:——
aromaticity transfer coupling reaction between phenols and pyrrolidines or indolines to generate the corresponding N-cyclohexyl pyrroles or indoles. In this transformation, the aromaticity of phenols is formally passed on to the pyrrolidine or indoline units. Substituted phenols thus can serve as latent cyclohexyl equivalents for the fast construction of various N-cyclohexyl pyrroles and indoles.
Microwave-Assisted Synthesis of N-<i>sec</i>- and N-<i>tert</i>-Alkylated Indoles
作者:Hartmut Schirok
DOI:10.1055/s-2008-1067005
日期:2008.5
A synthesis of N-substituted indoles by means of an epoxide-opening, nucleophilic aromatic substitution, and dehydration sequence is reported, which is capable of generating even N-tert alkyl substituted derivatives.
An efficient catalytic strategy toward the synthesis of N-substituted 3-methylindoles from inactive o-dihaloarenes and N-allylamines was developed by using a 1,3-bis(2,6-diisopropylphenyl)acenaphthoimidazol-2-ylidene (AnIPr)-ligated oxazoline palladacycle. It enabled a very broad substrate scope tolerating different functional groups, electronic properties, and steric bulkiness and afforded desired
A Mild Cu(I)-Catalyzed Oxidative Aromatization of Indolines to Indoles
作者:Feng Peng、Mark McLaughlin、Yizhou Liu、Ian Mangion、David M. Tschaen、Yingju Xu
DOI:10.1021/acs.joc.6b01854
日期:2016.10.21
A novel method for the oxidation of indolines to indoles is described. The method uses a Cu(I) catalyst and an organic percarbonate as the stoichiometric oxidant. The procedure was successfully applied at 0.5 kg scale in the production of a key intermediate in the synthesis of Elbasvir, which is a novel therapy for the treatment of hepatitis C virus infection.