Synthesis, Structure and Metal Binding Property of Internally 1,3-Arylene-Bridged Azacalix[6]aromatics
作者:Yi-Xin Fang、Liang Zhao、De-Xian Wang、Mei-Xiang Wang
DOI:10.1021/jo301528f
日期:2012.11.16
Three internally 1,3-arylene-bridged azacalix[6]aromatics 1–3 were synthesized by the Pd-catalyzed macrocyclic fragment coupling reaction between a stellated dibrominated pentamer and N2,N6-dimethylpyridine-2,6-diamine or N1,N3-dimethylbenzene-1,3-diamine. Single-crystal X-ray analysis revealed that these bimacrocyclic compounds all adopt a triply pillared groove-shaped conformation, conceptually being
三内部1,3-亚芳基-桥连的azacalix [6]芳烃1 - 3由一个之间的Pd-催化的大环片段的偶联反应合成星一样的二溴化的五聚体和Ñ 2 ,N 6二甲基吡啶-2,6-二胺或ñ 1 ,N 3-二甲基苯-1,3-二胺。X射线单晶分析表明,这些双大环化合物均采用三重柱状凹槽状构象,从概念上讲是由两个1,3-交替大环的融合衍生而来的。全吡啶主体1 Co(1)(CH 3 OH)2 }(CoCl 4)·3(CH 3 OH),Ni(1)(CH 3 OH)2 }(NiCl 4),Ni(1)(CH 3 OH)2 }(ClO 4)2 ·CH 3 OH和Cd 2(1)(CH 3 CN)4(H 2 O)4 }(ClO 4)4的结构已通过X射线晶体学分析进行了表征,探索了两种不同的金属结合模式。主体1的金属络合特性然后通过UV-vis和NMR滴定法研究溶液中的H 2O。随着被测金属离子(Mn 2 +,Fe