p-tert-Butyl thiacalix[4]arenes functionalized at the lower rim by o-, m-, p-amido and o-, m-, p-(amidomethyl)pyridine fragments as receptors for α-hydroxy- and dicarboxylic acids
作者:Ivan I. Stoikov、Arkadiy Yu. Zhukov、Maria N. Agafonova、Ruzal R. Sitdikov、Igor S. Antipin、Alexander I. Konovalov
DOI:10.1016/j.tet.2009.10.075
日期:2010.1
A series of new p-tert-butyl thiacalix[4]arenes with o-, m-, p-amido and o-, m-, p-(amidomethyl)pyridine substituents at the lower rim in cone, partial cone, and 1,3-alternate conformations were synthesized. The ability of the obtained compounds to recognize the α-hydroxy (glycolic, tartaric) and dicarboxylic (oxalic, malonic, succinic, fumaric, and maleic) acids was investigated by UV–vis spectroscopy
一系列新的p -叔丁基硫杂杯[4]芳烃与ø - ,米- ,p -酰氨基和ø - ,米- ,p -在下轮辋(酰氨基甲基)吡啶取代基锥形,偏锥形,和1 ,3-替代构象合成。通过紫外可见光谱研究了获得的化合物识别α-羟基(乙醇酸,酒石酸)和二羧酸(草酸,丙二酸,琥珀酸,富马酸和马来酸)的能力。另外,结合的效率和选择性,缔合常数log K a(10 2至10 7 中号-1)和化学计量确定为的络合物p -叔丁基硫杂杯[4]与酸芳烃。基于受体p -叔丁基硫杂杯[4](酰氨基甲基)吡啶替代芳烃在许多情况下最有效的络合。