Copper‐Catalyzed Regioselective Halogenation of Anilides with
<i>N</i>
‐Fluorobenzenesulfonimide
作者:Lianwen Jin、Xiaoli Zeng、Siyang Li、Guofu Qiu、Peng Liu
DOI:10.1002/ejoc.202200399
日期:2022.6.27
A copper-catalyzed direct chlorination and bromination of anilides with excellent regioselectivity and mono-substitution has been developed. This protocol provides an access to a broad range of arene chlorides and bromidesfrom easily accessible arenes under mild conditions with cheap KCl or NaBr as the halogen source.
A <i>para</i>
-C-H Functionalization of Aniline Derivatives via In situ Generated Bulky Hypervalent Iodinium Reagents
作者:Chao Tian、Xu Yao、Weizhe Ji、Qian Wang、Guanghui An、Guangming Li
DOI:10.1002/ejoc.201801058
日期:2018.11.25
A general para‐selective C‐H functionalization was achieved via a stericcontrol strategy. Para‐iodo, bromo, chloro, nitro, and trifluormethyl aniline derivatives were prepared via in situ generated, bulky hypervalent iodinium reagents in as little as 10 min. Products can be purified without column chromatography or recrystallization, which significantly reduces the waste and simplifies the work‐up