Herein we present a continuous improvement of visible-lightmediated N-dealkylative addition of tertiary amines to dimethyl acetylenedicarboxylates (DMAD) using alkyl halogenides as external oxidants together with base additives. This method is highlighted by excellent tolerance with various tertiary amines and good to excellent yields in short reaction time under mild conditions.
An efficient dealkylative addition of trialkylamines to dialkyl acetylenedicarboxylates in the presence of a metallic chloride
作者:Chan Sik Cho
DOI:10.1016/j.tetlet.2005.01.034
日期:2005.2
Dialkyl acetylenedicarboxylates react effectively with an array of trialkylamines in dioxane at 80degreesC in the presence of a metallic chloride to afford the corresponding aminomaleates in good yields. (C) 2005 Elsevier Ltd. All rights reserved.
ELECTROLYTIC SOLUTION, METHOD FOR PREPARING ESTER COMPOUND CONTAINED THEREIN AND LITHIUM SECONDARY CELL
申请人:NEC Corporation
公开号:US20150118548A1
公开(公告)日:2015-04-30
Provided is a lithium secondary cell which has high capacity, suppresses deterioration in capacity and improves cycle characteristics particularly when used in high-temperature environments and has long lifespan. Provided is a lithium secondary cell including a positive electrode active material layer containing a positive electrode active material, a negative electrode active material layer containing a negative electrode active material and an electrolytic solution for immersing the positive and negative electrode active material layers, wherein the electrolytic solution contains at least one certain ester compound.