The article describes the synthesis and extraction properties of the new hexahomotrioxacalix[3]arene-based derivatives cone- and partial-cone-2 bearing 1-methyl-1H-imidazole moieties at the lower rim. It has been demonstrated that O-alkylation of the flexible macrocycle 1 with 2-(chloromethyl)-1-methyl-1H-imidazole hydrochloride affords tri-O-alkylated products with a cone or partial-cone conformation
本文介绍新的hexahomotrioxacalix [3]芳烃基衍生物的合成和提取性质锥-和局部圆锥- 2轴承1甲基-1- ħ咪唑片断在较低的边缘。已经证明,用2-(氯甲基)-1-甲基-1 H-咪唑盐酸盐将挠性大环1进行O-烷基化,得到具有圆锥或部分圆锥构象的三-O-烷基化产物。碱金属盐(例如NaH和Cs 2 CO 3)可通过以下途径在构象异构体分布中发挥重要作用模板效果。受体2的构象已通过X射线晶体学分析证实。此外,报道了受体2对选择的碱金属/过渡金属阳离子和烷基铵离子的络合性质。新的1-甲基- 1 H ^ -咪唑取代的hexahomotrioxacalix [3]芳烃框架也HCR的高效提取2 ö 7 - / Cr的2个ö 7 2-阴离子在低pH。
Synthesis and evaluation of a novel ionophore based on a thiacalix[4]arene derivative bearing imidazole units
作者:Jiang-Lin Zhao、Hirotsugu Tomiyasu、Xin-Long Ni、Xi Zeng、Mark R. J. Elsegood、Carl Redshaw、Shofiur Rahman、Paris E. Georghiou、Takehiko Yamato
DOI:10.1039/c4nj01099j
日期:——
Alkali metal salts play an important role in the conformer distribution of thiacalix[4]areneviaa template effect.