The facile and efficient preparation of a cationic water-soluble pillar[6]arene was achieved, which shows a high affinity for sodium 2-naphthalenesulfonate and could encapsulate an amphiphilic guest containing the 2-naphthalenesulfonate unit as the hydrophilic part to change the aggregation of the amphiphilic guests in water, giving regular and uniform micelles.
One-pot synthesis of pillar[n]arenes catalyzed by a minimum amount of TfOH and a solution-phase mechanistic study
作者:Kai Wang、Li-Li Tan、Dai-Xiong Chen、Nan Song、Guan Xi、Sean Xiao-An Zhang、Chunju Li、Ying-Wei Yang
DOI:10.1039/c2ob26635k
日期:——
A practical and effective trifluoromethanesulfonicacid (TfOH)-catalyzed cyclooligomerization strategy was developed for the synthesis of functionalized pillar[n]arenes and copillar[5]arenes from 1,4-dialkoxybenzenes with paraformaldehyde under mild reaction conditions, and the reaction mechanism of solution-phase catalytic synthesis of pillararenes was investigated by room-temperature X-band ESR spectroscopy
实用有效 三氟甲磺酸 (三氟乙酸)在温和的反应条件下,开发了由1,4-二烷氧基苯与多聚甲醛合成官能化的柱[ n ]芳烃和copillar [5]芳烃的)催化环寡聚反应策略,并研究了溶液相催化合成柱芳烃的反应机理通过室温X波段ESR光谱,质谱,NMR和对照实验,表明最初的自由基过程以及随后的偶联和闭环阶段的Friedel-Crafts烷基化过程。
Synthesis of a cationic water-soluble pillar[6]arene and its effective complexation towards naphthalenesulfonate guests
作者:Wei Chen、Yanyan Zhang、Jian Li、Xiaobing Lou、Yihua Yu、Xueshun Jia、Chunju Li
DOI:10.1039/c3cc44328k
日期:——
A novel positively charged pillar[6]arene derivative bearing twelve pyridinium moieties has been synthesized. Its efficient complexation behavior towards two anionic naphthalenesulfonate substrates in aqueous media is described.