Functionalized 3,3′,5,5′-Tetraaryl-1,1′-Biphenyls: Novel Platforms for Molecular Receptors
作者:Roger Welti、Yvonne Abel、Volker Gramlich、François Diederich
DOI:10.1002/hlca.200390055
日期:2003.3
This paper describes the development of novel aromatic platforms for supramolecular construction. By the Suzuki cross-coupling protocol, a variety of functionalized m-terphenyl derivatives were prepared (Schemes 1–4). Macrolactamization of bis(ammonium salt) (S,S)-6 with bis(acyl halide) 7 afforded the macrocyclic receptor (S,S)-2 (Scheme 1), which was shown by 1H-NMR titration studies to form ‘nesting'
本文描述了用于超分子结构的新型芳香平台的发展。由铃木交叉耦合协议,各种官能化的间-三联苯衍生物制备(方案1-4)。用双(酰卤)7对双(铵盐)(S,S)-6进行大环内酰胺化得到大环受体(S,S)-2(方案1),通过1 H-NMR滴定研究表明形成'具有辛基葡糖苷的中等稳定性(K a在130和290 M -1,300 K之间)的嵌套复合物13–非竞争性溶剂CDCl 3中的– 15(图2)。从3,3',5,5'-tetrabromo-1,1'-联苯开始的Suzuki交叉偶联提供了针对裂型(图1)和大三环受体的一系列新型扩展芳族平台(方案5)如(S,S,S,S)-1。尽管质谱证据表明在两个功能化的3,3',5,5'-四芳基-1,1'-联苯衍生物(S,S)之间通过大内酰胺化作用形成了(S,S,S,S)-1 - 33和36获得,该1 H-和就纯度和组成而言,纯化材料的13 C-NMR光谱仍未定论。新型,差异功能化的3