The synthesis of tetracarbonyl derivatives of thiacalix[4]arene in different conformations and their complexation properties towards alkali metal ions
作者:Ivan I. Stoikov、Omran A. Omran、Svetlana E. Solovieva、Shamil K. Latypov、Konstantin M. Enikeev、Aidar T. Gubaidullin、Igor S. Antipin、Alexander I. Konovalov
DOI:10.1016/s0040-4020(03)00077-2
日期:2003.2
The three conformations of 5,11,17,23-tetra-tert-butyl-25,26,27,28-tetrakis[(benzoyl)methoxy]-2,8,14,20-tetrathiacalix[4]arene 1: cone, partial cone and 1,3-alternate, were prepared by the treatment of 5,11,17,23-tetra-tert-butyl-2,8,14,20-tetrathiacalix[4]arene-25,26,27,28-tetraol (TCA) with α-bromo acetophenone in the presence of appropriate alkali carbonate M2CO3 (M=Na, K, Cs) as base catalyst in
5,11,17,23-四-的三个构象叔丁基25,26,27,28四[(苯甲酰基)甲氧基] -2,8,14,20-tetrathiacalix [4]芳烃1:锥形,部分锥形和1,3-备用,通过5,11,17,23-四-的治疗中制备叔丁基- 2,8,14,20--tetrathiacalix [4]芳烃- 25,26,27,在适当的碱金属碳酸盐M 2 CO 3(M = Na,K,Cs)作为乙腈中的碱催化剂存在下,用α-溴苯乙酮与28-四醇(TCA)混合。构象结构通过1 H NMR,1 H– 1确定H COSY,1D NOE,2D ROESY和X射线实验。通过离子对萃取法研究了所获得的大环化合物对碱金属阳离子的结合选择性。
Synthesis, Separation and Characterization of Thiacalix[4]arenes Diastereomers
Two different 1, 3-Distal thiacalix[4]arenas were prepared by the reaction of thiacalix[4]arene with phenacyl and for p-vitro phenacyl bromide in acetone or acetonitrile in the presence of dry CsOH. The prepared 1, 3-distal disubstituted thiacalixarenes afforded two pairs of diastereomers upon brominating in chloroform. The obtained diastereomers were separated by fractional crystallization in a mixture dichloromethane-acetone.