Silver-Catalyzed <i>para</i>-Selective Amination and Aminative Dearomatization of Phenols with Azodicarboxylates in Water
作者:Ruinan Zhao、Zhong Zhou、Jixiang Liu、Xia Wang、Qian Zhang、Dong Li
DOI:10.1021/acs.orglett.0c03147
日期:2020.10.16
An efficient silver-catalyzed para-selective amination and aminative dearomatization of phenols with azodicarboxylates was developed. It afforded the para-aminophenols or amino cyclohexadieneones from free phenols depending on whether it has a para-substituent. The reaction proceeded smoothly in water under simple and mild conditions, giving the highly selective products in good yields within a short
Gold-Catalyzed Direct Amination of Arenes with Azodicarboxylates
作者:Liuqun Gu、Boon Siong Neo、Yugen Zhang
DOI:10.1021/ol200373q
日期:2011.4.1
Gold(III) chloride catalyzed direct amination of arenes with azodicarboxylates was developed. The new catalytic system was active to a broad range of substrates, and the reaction was carried out under mild conditions. It represents the first catalytic system for the direct amination of electron-deficient arenes with azodicarboxylates to the best of our knowledge. This reaction provides an important
Ruthenium chloride, a new and efficient catalyst for direct amination of arenes with azodicarboxylates
作者:Suleman M. Inamdar、Vinod K. More、Sisir K. Mandal
DOI:10.1016/j.tetlet.2012.11.075
日期:2013.2
An efficient cross coupling amination of arene with azodicarboxylate to afford hydrazides catalysed by ruthenium chloride has been demonstrated. The catalyst was found to be effective across a spectrum of arenes with a variety of functional groups. The yields are found to be modest to low depending on the type of substrates. The catalyst can be recycled in ligand free conditions to afford the cross
ZrCl4-promoted halogen migration during an electrophilic amination of halogenated phenolsElectronic supplementary information (ESI) available: spectroscopic data (1H NMR,13C NMR, IR, MS), mp and elemental analysis (or HRMS) for the products 3 and 4. See http://www.rsc.org/suppdata/cc/b2/b203622c/Dedicated to Professor Waldemar Adam, University of Würzburg, Germany, on the occasion of his 65th birthday.
An electrophilic amination of halogenated phenols with diisopropyl diazenedicarboxylate in the presence of ZrCl4 as a Lewis acid, accompanied by a halogen migration, was demonstrated for the first time; the fluorine, chlorine, bromine, or iodine atom migrated during the amination process under mild reaction conditions.