Regioselective Radical Arene Amination for the Concise Synthesis of <i>ortho</i>-Phenylenediamines
作者:James E. Gillespie、Charlotte Morrill、Robert J. Phipps
DOI:10.1021/jacs.1c05531
日期:2021.6.30
relevant diazoles. Our method can deliver both free amines and monoalkyl amines allowing access to unsymmetrical, selectively monoalkylated benzimidazoles and benzotriazoles. As well as providing concise access to valuable ortho-phenylenediamines, this work demonstrates the potential for utilizing noncovalent interactions to control positional selectivity in radical reactions.
Palladium-Catalyzed Decarboxylative Synthesis of Arylamines
作者:Qipu Dai、Peihe Li、Nuannuan Ma、Changwen Hu
DOI:10.1021/acs.orglett.6b02724
日期:2016.11.4
A novel approach has been developed for the synthesis of arylamines via the palladium-catalyzed intramoleculardecarboxylative coupling (IDC) of aroyloxycarbamates, obtained in situ by reacting aryl carboxylic acids with hydroxycarbamates. The reaction offers facile access to structurally diverse arylamines with the site-specific formation of the C(sp2)-N bond under mild conditions.
A novel and efficient Fe‐catalyzed direct C−H amination (NH2) of arenes is reported using a new redox‐active aminating reagent. The reaction is simple, and can be performed under air, mild, and redox‐neutral conditions. This protocol has a broad substrate scope and could be used in the late‐stage modification of bioactive compounds. Mechanistic studies demonstrate that a radical pathway could be involved
[EN] [1,2,4]TRIAZOLOPYRIDINES AND THEIR USE AS PHOSPODIESTERASE INHIBITORS<br/>[FR] [1,2,4] TRIAZOLOPYRIDINES ET LEUR UTILISATION EN TANT QU'INHIBITEURS DE LA PHOSPHODIESTÉRASE
申请人:LEO PHARMA AS
公开号:WO2013092739A1
公开(公告)日:2013-06-27
The present invention relates to novel [1,2,4]triazolopyridine compounds with phosphodiesterase inhibitory activity, as well as to their use as therapeutic agents in the treatment of inflammatory diseases and conditions.