Electrophilic aryl-halogenation using N-halosuccinimides under ball-milling
摘要:
We report here a methodology of chemo- and regio-selective aryl bromination and iodination using respective N-halosuccinimides at room temperature in the absence of any solvents, catalyst/additives under ball-milling condition. However, for chlorination ceric ammonium nitrate was used as additive. The coupled product succinimide, produced from the reactions, was recycled via regeneration of NBS. This methodology works with the electron-donor substituted or unsubstituted arenes. (C) 2014 Elsevier Ltd. All rights reserved.
Iron(II)‐Catalyzed Direct Cyanation of Arenes with Aryl(cyano)iodonium Triflates
作者:Zhibin Shu、Wenzhi Ji、Xi Wang、Yujing Zhou、Yan Zhang、Jianbo Wang
DOI:10.1002/anie.201309791
日期:2014.2.17
A direct oxidative cyanation of arenes under FeII catalysis with 3,5‐di(trifluoromethyl)phenyl(cyano)iodonium triflate (DFCT) as the cyanating agent has been developed. The reaction is applicable to wide range of aromatic substrates, including polycyclic structures and heteroaromatic compounds.