The investigation of fluorination reaction of p-substituted benzenesulfonimides with fluorine–nitrogen mixed gas to synthesize NFSI analogues
摘要:
This paper studied the fluorination reaction of p-substituted benzenesulfonimides with diluted elemental fluorine to synthesize N-fluoro-benzenesulfonimide (NFSI) analogues. Several synthetic methods were compared and we found that, for many p-substituted benzenesulfonimides, the fluorination of their sodium salts with 10% F-2-N-2 mixed gas in acetonitrile at room temperature could afford NFSI analogues in moderate to good yields. (C) 2011 Elsevier B.V. All rights reserved.
Copper-catalyzed imination of sulfoxides and sulfides
作者:Yuanyuan Liu、Hanying Wang、Xianjin Yang
DOI:10.1016/j.tet.2019.07.020
日期:2019.8
and sulfilimines have attracted considerable interest among organic chemists. The Cu(II)-catalyzed imination of sulfoxides and sulfides using various N-fluoro benzenesulfonamides was investigated in this study. The scope of the reaction was demonstrated by using several substituted sulfides and sulfoxides. The flow strategy for the preparation of NH-sulfoximines was also examined. By trapping nitrene
A Novel C-N Migration Rearrangement Based on N-F Compounds for the Synthesis of <i>N</i>
-Alkyl Diaryl Ureas
作者:Yi-Xiao Zhao、Tian Xie、San-Ke Yang、Xian-Jin Yang
DOI:10.1002/ejoc.201901602
日期:2020.1.31
A novel aryl C–N shiftrearrangement reaction to form alkyl diaryl ureas from facilely available FPSBA derivatives was developed. FPSBA selectively reacted with secondary alkyl phenylamines to afford unsymmetrical alkyl diaryl ureas in good yields through a vicinal SN2′ mechanism rather than the traditional isocyanate intermediate pathway.
开发了一种新型的芳基C–N移位重排反应,可从容易获得的FPSBA衍生物形成烷基二芳基脲。FPSBA通过仲S N 2'机理而不是传统的异氰酸酯中间体途径与仲烷基苯胺选择性反应,以高收率提供不对称的烷基二芳基脲。
Aminochlorination of Alkenes with CFBSA
作者:Xiao-Qiu Pu、Hai-Yong Zhao、Ze-Hai Lu、Xiao-Peng He、Xian-Jin Yang
DOI:10.1002/ejoc.201600709
日期:2016.9
A novel catalyst-free aminochlorination of alkenes was developed by the direct addition of alkenes to N-chloro-N-fluorobenzenesulfonamide (CFBSA). The reaction produces 2-chloro-3-fluoramino and 3-chloro-2-fluoroamino adducts in 1,2-dichloroethane under reflux and dichloromethane at room temperature, respectively, in a regioselective manner. The electronic and steric effects of the fluorine atom of