使用1 H NMR光谱和电喷雾电离质谱法研究了葫芦[7]尿素与一系列N-取代的N-甲基哌啶鎓,N-甲基吡咯烷鎓和N-甲基吗啉鎓阳离子之间的主-客体络合物的形成。由十甲基链桥接的包含N-甲基杂环首基的阳离子与葫芦丝[7]尿嘧啶形成顺序的1:1([2]假轮烷)和2:1主体-客体复合物。葫芦素起初位于十甲基链上,但是随着主体分子的进一步添加,主体易位至阳离子N-发生杂环首基。通过竞争性1 H NMR结合实验确定的葫芦素主体-客体稳定性常数的大小顺序遵循季铵阳离子疏水性的趋势。
[EN] COMPOUNDS CONTAINING ALKYL-CYANO-BORATE OR ALKYL-CYANO-FLUOROBORATE ANIONS<br/>[FR] COMPOSÉS CONTENANT LES ANIONS ALKYLE, CYANO, BORATE OU ALKYLE, CYANO, FLUOROBORATE
申请人:MERCK PATENT GMBH
公开号:WO2013010641A1
公开(公告)日:2013-01-24
The invention relates to new compounds containing alkyl/alkenyl-cyano- borate or alkyl/a!kenyl-cyano-fluoroborate anions, their preparation and their use, in particular as part of electrolyte formulations for electrochemical or optoelectronic devices.
Synthesis and immobilization of quaternary ammonium cations in acidic zeolites
作者:Wei Wang、Andreas Buchholz、Irina I. Ivanova、Jens Weitkamp、Michael Hunger
DOI:10.1039/b308382a
日期:——
A general method for the synthesis of quaternary ammonium cations in acidic zeolites by a direct reaction of tertiary amines and alcohols is described.
一种通过叔胺和醇的直接反应在酸性沸石中合成季铵盐阳离子的一般方法被描述。
Carbonylation of quaternary ammonium salts to tertiary amides using NaCo(CO)4 catalyst
作者:Yizhu Lei、Rui Zhang、Qing Wu、Hui Mei、Bo Xiao、Guangxing Li
DOI:10.1016/j.molcata.2013.10.014
日期:2014.1
the catalytic carbonylation of quaternary ammoniumsalts under anhydrous condition. Quaternary ammoniumsalts, a kind of versatile reagents that were widely used in organometallic chemistry, can be carbonylated to tertiaryamides by an in situ prepared NaCo(CO)4 catalyst. It was found that the counterions (Cl−, Br−, I−, OTf−) in the quaternary ammoniumsalts played a significant role in the reaction
Palladium-catalyzed carbonylation of quaternary ammonium halides to tertiary amides
作者:Yizhu Lei、Rui Zhang、Linjuan Wu、Qing Wu、Hui Mei、Guangxing Li
DOI:10.1002/aoc.3126
日期:2014.4
anhydrous conditions was investigated using palladium catalyst. The carbonylation of tetramethylammonium iodide was chosen as a model reaction and studied systematically. Ligand‐free PdCl2 showed efficient catalytic performance for this transformation. A palladium catalyst loading as low as 0.05 mol% was sufficient for high yield (96.9%) of N,N‐dimethylacetamide, corresponding to a turnover frequency
Anion radical salts of bis[1,2,5]thiadiazolotetracyanoquinodimethan (BTDA) containing forty kinds of alkylammonium ions were prepared whose molar ratios are unique for each cation and changed from 1:1 (2A–2L) to 2:3 (2M–2Z), 1:2 (2a–2m), and 2:5 (2n) with elongation of the side chains. The electrical conductivities of the salts are largely affected by the molar ratio and the spatial requirement of