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首页> 外文期刊>RSC Advances >Constitutional isomers of brominated-functionalized copillar[5]arenes: synthesis, characterization, and crystal structures
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Constitutional isomers of brominated-functionalized copillar[5]arenes: synthesis, characterization, and crystal structures

机译：溴化官能团pil虫[5]芳烃的结构异构体：合成，表征和晶体结构

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摘要

We herein report the preparation of constitutional isomers of brominated-functionalized pillar[5]arenes via co-condensation of 1,4-bis(2-bromoethoxy)benzene and 1,4-dimethoxybenzene. The structures of the obtained isomers were then established using single crystal X-ray diffraction. We also found that the isomeric yield distribution of the different constitutional isomers was independent of the monomer's mole feed ratio, as revealed by HPLC analysis of the crude mixture. Finally, further characterization of the separated constitutional isomers indicated that they possess different melting points, NMR spectra, crystal structures, binding constants and stacking patterns in the solid state.
机译：我们在此报告了通过1,4-双（2-溴乙氧基）苯和1,4-二甲氧基苯的共缩合反应制备溴化官能化支柱[5]芳烃的结构异构体。然后使用单晶X射线衍射确定获得的异构体的结构。我们还发现，由粗混合物的HPLC分析表明，不同结构异构体的异构体收率分布与单体的摩尔进料比无关。最后，对分离出的结构异构体的进一步表征表明，它们在固态下具有不同的熔点，NMR光谱，晶体结构，结合常数和堆积模式。

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