Anodically Coupled Electrolysis for the Heterodifunctionalization of Alkenes
作者:Ke-Yin Ye、Gisselle Pombar、Niankai Fu、Gregory S. Sauer、Ivan Keresztes、Song Lin
DOI:10.1021/jacs.7b13387
日期:2018.2.21
Herein, we discuss the strategic use of anodically coupled electrolysis, an electrochemical process that combines two parallel oxidative events, as a complementary approach to existing methods for redox organic transformations. Specifically, we demonstrate anodically coupled electrolysis in the regio- and chemoselective chlorotrifluoromethylation of alkenes.
Trifluoromethylfluorosulfonylation of Unactivated Alkenes Using Readily Available Ag(O<sub>2</sub>
CCF<sub>2</sub>
SO<sub>2</sub>
F) and <i>N</i>
-Fluorobenzenesulfonimide
作者:Yongan Liu、Hao Wu、Yong Guo、Ji-Chang Xiao、Qing-Yun Chen、Chao Liu
DOI:10.1002/anie.201709663
日期:2017.11.27
novel intermolecular radical trifluoromethylfluorosulfonylation of unactivated alkenes under mild reaction conditions with good functional‐group tolerance in the most atom‐economic manner by usingreadilyavailable Ag(O2CCF2SO2F) and N‐fluorobenzenesulfonimide (NFSI). Both the trifluoromethyl and sulfonyl groups in the products originate from Ag(O2CCF2SO2F).
通过使用现成的Ag(O 2 CCF 2 SO 2 F)和N-氟代苯磺酰亚胺(NFSI),在最温和的反应条件下,以良好的官能团耐受性,以温和的反应条件,提出了一种新的未活化烯烃的分子间自由基三氟甲基氟磺酰化方法。产物中的三氟甲基和磺酰基均源自Ag(O 2 CCF 2 SO 2 F)。
<i>anti</i>
‐Markovnikov Iodofluorination of Alkenes
Described herein is the anti-Markovnikov iodofluorination of alkenes with Selectfluor/nBu4NI. Selectfluor usually reacts with alkenes through a Markovnikov-type addition. However, the presence of iodide anion leads to a reversed mode. The protocol allows for the construction of tertiary C−F bonds, and features convenient operations, simple reaction conditions, and the installation of an iodine atom
本文描述的是烯烃与 Selectfluor/ n Bu 4 NI的抗马尔科夫尼科夫碘氟化反应。Selectfluor 通常通过马尔科夫尼科夫型加成与烯烃反应。然而,碘化物阴离子的存在导致了反向模式。该协议允许构建三级 C-F 键,具有操作方便、反应条件简单、安装碘原子等特点,为进一步转化提供了可能性。
Radical Carbofluorination of Unactivated Alkenes with Fluoride Ions
作者:Zhonglin Liu、He Chen、Ying Lv、Xinqiang Tan、Haigen Shen、Hai-Zhu Yu、Chaozhong Li
DOI:10.1021/jacs.8b03077
日期:2018.5.16
The copper-assisted radical carbofluorination of unactivatedalkenes with fluoride ions is described. With [Cu(L3)F2]H2O (L3 = 4,4'-di(methoxycarbonyl)-2,2'-bipyridine) as the fluorine source and [Ag(DMPhen)(MeCN)]BF4 (DMPhen = 2,9-dimethyl-1,10-phenanthroline) as the chloride scavenger, the reaction of unactivatedalkenes with CCl4 in acetonitrile provided the corresponding carbofluorination products
Cobalt-catalyzed hydro-difluoromethylthiolation/hydro-trifluoromethylthiolation of unactivated alkenes
作者:Xinxin Shao、Xin Hong、Long Lu、Qilong Shen
DOI:10.1016/j.tet.2019.05.061
日期:2019.8
ylthiolation reaction of unactivated alkenes was described. Both reactions were conducted at room temperature and a variety of common functional groups such as halogen, ester, aldehyde, enolizable ketone or ester, nitro or cyano group, sulfonate and carbamate were compatible with the reaction conditions. Radical cyclization and radical inhibitor experiments suggested that the reaction proceeds through