The Influence of the Framework: An Anion-Binding Study Using Fused [<i>n</i>]Polynorbornanes
作者:Benjamin M. Long、Frederick M. Pfeffer
DOI:10.1002/asia.201301677
日期:2014.4
A series of bis‐thiourea‐functionalized [n]polynorbornane hosts (1–6) with increasing size were synthesized and their anion‐binding properties were evaluated by using 1H NMR spectroscopic titration and Job’s plot analysis. The larger bis‐thiourea‐[3]polynorbornane scaffolds 4 and 5 bound acetate in a 1:1 (cooperative) arrangement, whereas the corresponding smaller norbornane host 2, identical in preorganization
一系列双-硫脲-官能化[的Ñ ]降冰片烯主机(1 - 6)与尺寸的增加,合成,并通过使用他们的阴离子结合特性进行了评价1 1 H NMR光谱和滴定工作的图分析。较大的双硫脲-[ 3 ]聚降冰片烷支架4和5以1:1(合作)排列结合乙酸盐,而相应的较小的降冰片烷宿主2,在预组织方面相同,以1:2(独立)排列结合乙酸盐。相反,框架的大小对磷酸二氢的结合没有影响。这些结果清楚地表明了框架本身可能对主机与访客之间的交互产生微妙的影响。