It was determined that diaryliodonium(III) triflates bearing a trimethoxybenzene (TMP) auxiliary are more reactive than the reported selective aryl-transfer iodonium salts in the N-arylation of benzimidazoles and other types of azole compounds under catalytic conditions. The TMP-iodonium(III) salts can thus effectively facilitate the reaction at 50 °C or below, producing the corresponding N-arylated
A Versatile Approach to Ullmann C–N Couplings at Room Temperature: New Families of Nucleophiles and Electrophiles for Photoinduced, Copper-Catalyzed Processes
作者:Daniel T. Ziegler、Junwon Choi、José María Muñoz-Molina、Alex C. Bissember、Jonas C. Peters、Gregory C. Fu
DOI:10.1021/ja4060806
日期:2013.9.4
The use of light to facilitate copper-catalyzed cross-couplings of nitrogen nucleophiles can enable C-N bond formation to occur under unusually mild conditions. In this study, we substantially expand the scope of such processes, establishing that this approach is not limited to reactions of carbazoles with iodobenzene and alkyl halides. Specifically, we demonstrate for the first time that other nitrogen
Catalyst-Free N-Arylation Using Unactivated Fluorobenzenes
作者:Frederik Diness、David P. Fairlie
DOI:10.1002/anie.201202149
日期:2012.8.6
Caught in a ‘SNAr'e: A one‐step, high‐yielding, catalyst‐free method is described for N‐arylation of azoles and indoles from unactivated monofluorobenzenes. This SNAr reaction tolerates a wide range of substituents and can also generate halogenated N‐aryl products. The reaction can also be performed simultaneously with or subsequent to a copper‐ or palladium‐catalyzed cross‐coupling reaction in the
NONAQUEOUS ELECTROLYTE AND NONAQUEOUS SECONDARY BATTERY
申请人:Asahi Kasei Kabushiki Kaisha
公开号:EP3279997A1
公开(公告)日:2018-02-07
The purpose of the present invention is to provide a nonaqueous electrolyte that contains acetonitrile having an excellent balance between viscosity and the dielectric constant and a fluorine-containing inorganic lithium salt, wherein the generation of complex cations comprising a transition metal and acetonitrile is suppressed, excellent load characteristics are exhibited, and increases in internal resistance upon repeated charge/discharge cycles are suppressed; a further purpose of the present invention is to provide a nonaqueous secondary battery. The present invention relates to a nonaqueous electrolyte which contains: a nonaqueous solvent comprising acetonitrile; a fluorine-containing inorganic lithium salt; and a specific nitrogenous cyclic compound typified by benzotriazole.
Nonaqueous electrolyte and nonaqueous secondary battery
申请人:Asahi Kasei Kabushiki Kaisha
公开号:US10756394B2
公开(公告)日:2020-08-25
The purpose of the present invention is to provide a nonaqueous electrolyte that contains acetonitrile having an excellent balance between viscosity and the dielectric constant and a fluorine-containing inorganic lithium salt, wherein the generation of complex cations comprising a transition metal and acetonitrile is suppressed, excellent load characteristics are exhibited, and increases in internal resistance upon repeated charge/discharge cycles are suppressed; a further purpose of the present invention is to provide a nonaqueous secondary battery. The present invention relates to a nonaqueous electrolyte which contains: a nonaqueous solvent comprising acetonitrile; a fluorine-containing inorganic lithium salt; and a specific nitrogenous cyclic compound typified by benzotriazole.