Cobalt-catalyzed Divergent Markovnikov and Anti-Markovnikov Hydroamination
作者:Xiang-Gui Zhang、Zi-Xin He、Peng Guo、Zheng Chen、Ke-Yin Ye
DOI:10.1021/acs.orglett.1c03511
日期:2022.1.14
Catalytic hydroamination of the readily available alkenes is among the most straightforward means to construct diverse alkyl amines. To this end, the facile access to both regioselectivity, i.e., Markovnikov or anti-Markovnikov hydroamination, with minimum reaction-parameter alternation, remains challenging. Herein, we report a cobalt-catalyzed highly selective and divergent Markovnikov and anti-Markovnikov
Straightforward conversion of alcohols into dibenzenesulfonimides
作者:Emerson Giovanelli、Eric Doris、Bernard Rousseau
DOI:10.1016/j.tetlet.2006.09.148
日期:2006.11
The reaction of various alcohols with N-fluorodibenzenesulfonimide and triphenylphosphine leads to the corresponding dibenzenesulfonylated amines in high yields. (c) 2006 Elsevier Ltd. All rights reserved.
Cobalt‐Catalyzed Radical Hydroamination of Alkenes with
<i>N</i>
‐Fluorobenzenesulfonimides
N-fluorobenzenesulfonimide (NFSI) and its analogues as both nitrogen source and oxidant was successfully disclosed. A variety of alkenes, including aliphatic alkenes, styrenes, α, β-unsaturated esters, amides, acids, as well as enones, were all compatible to provide desired amination products. Mechanistic experiments suggest that the reaction underwent a metal-hydride-mediated hydrogen atom transfer (HAT) with alkene