已经合成了在上边缘含有二茂铁酰胺并且在下边缘(5a,5b和5c)含有甲氧基或乙氧基羰基甲氧基(乙酯)基团的杯[4]芳烃。发现四甲氧基5a和二甲氧基二乙酯5c在构象上不稳定,并且在溶液中以锥和部分锥构型存在。阴离子结合由研究1个在CDCl 1 H NMR滴定3表明图5B的约束氯-选择性地与高稳定性。化合物5c中形成有Cl络合物-和H 2 PO 4 -前者更稳定。锥体在化合物局部锥形构象的比例5a中被发现在结合氯降低-和H 2 PO 4 -和在极性溶剂中。
Calix[4]arene derivatives containingamideferrocene units at the wide rim and ethyl ester groups at the narrow rim, L1-L3, were synthesized and their anion binding and sensing properties were investigated. It was found from (1)H NMR titrations that L1-L3 were able to bind selectively with carboxylate anions. Moreover, cyclic voltammetry and square wave voltammetry showed that L1-L3 were able to act