Noncatalytic Pyridyl-Directed Alkylation and Arylation Carbon–Fluorine Bond of Polyfluoroarenes with Grignard Reagents
摘要:
Cross-coupling reaction of polyfluoroarenes with Grignard reagents via pyridine-directed cleavage of C-F bond in the absence of metal catalysts was developed. A possible mechanism was suggested.
A chemical composition and method of use of the composition is described. The chemical composition includes an aza-enediyne, aza-enyne allene, or an aza-diallene. These compound are preferably non-hydrolyzable, cationic compounds that bind to nucleic acids. In addition it is believed that these compounds may undergo chemical reactions in the presence of a nucleic acid to generate reactive intermediates that cleave nucleic acids.
Nickel-catalyzed N-heterocycle-directed cross-coupling of fluorinated arenes with organozinc reagents
作者:Sen-Han Xiao、Yang Xiong、Xu-Xue Zhang、Song Cao
DOI:10.1016/j.tet.2014.04.052
日期:2014.7
Nickel-catalyzed N-heteroaromatics, such as pyridine, pyrazine or pyrimidine-directed cross-coupling of fluorinated arenes with organozincreagents in the presence of sodium and PCy3 was reported.
Investigations of the generality of quaternary ammonium salts as alkylating agents in direct C–H alkylation reactions: solid alternatives for gaseous olefins
C–H alkylation reactions using short chain olefins as alkylating agents could be operationally simplified on the lab scale by using quaternary ammonium salts as precursors for these gaseous reagents: Hofmann elimination delivers in situ the desired alkenes with the advantage that the alkene concentration in the liquid phase is high. In case a catalytic system did not tolerate the conditions for Hofmann
SYNTHESIS OF HYPERVALENT IODINE REAGENTS WITH DIOXYGEN
申请人:The Texas A&M University System
公开号:US20190002487A1
公开(公告)日:2019-01-03
Methods of synthesis of hypervalent iodine reagents and methods for oxidation of organic compounds are disclosed.
揭示了高价碘试剂的合成方法和有机化合物氧化的方法。
Palladium-Catalyzed Electrochemical C–H Alkylation of Arenes
作者:Qi-Liang Yang、Chuan-Zeng Li、Liang-Wei Zhang、Yu-Yan Li、Xiaofeng Tong、Xin-Yan Wu、Tian-Sheng Mei
DOI:10.1021/acs.organomet.8b00550
日期:2019.3.25
electrochemical C–H functionalization reactions have emerged as attractive tools for organic synthesis. This process offers an alternative to conventional methods that require harsh chemical oxidants. However, this electrolysis requires divided cells to avoid catalyst deactivation by cathodic reduction. Herein, we report the first example of palladium-catalyzed electrochemical C–H alkylation of arenes using