Solid-State Esterification via Ionic-to-Covalent Bond Transformation in Ionic Molecular Crystals Consisting of Disubstituted Anthracene Anion-Cation Combinations
作者:Masato Suzuki、Takahiro Fujii、Yoko Naito、Kazuhisa Yamoto、Shin-ichi Matsuoka、Koji Takagi、Haruki Sugiyama、Hidehiro Uekusa
DOI:10.1246/bcsj.20170349
日期:2018.3.15
reactions involving ionic-to-covalent bond transformation were achieved in the ionic molecular crystals of 1,8-bis[(pyridin-1-ium-1-yl)methyl]anthracene anthracene-1,8-dicarboxylate to produce the cyclic diester. The crystal structure given by X-ray diffraction analysis showed that the electrostatic interaction between the benzyl pyridinium cation and the carboxylate anion successfully works to locate these
在 1,8-双[(pyridin-1-ium-1-yl)methyl]anthracene anthracene-1,8-dicarboxylate 的离子分子晶体中实现了涉及离子到共价键转化的热固相反应,以产生环二酯。X 射线衍射分析给出的晶体结构表明,苄基吡啶鎓阳离子和羧酸根阴离子之间的静电相互作用成功地使这些反应位点彼此靠近,并且存在结晶溶剂和释放的吡啶逃逸的通道。因此,通过晶体与晶体的反应选择性地形成了环二酯,这通过反应前后晶体的粉末 XRD 图谱和光学显微镜和 SEM 图像得到了证实。这是第一个热晶体对晶体的缩合反应。还研究了 1,8-双[(pyridin-1-ium-1-yl)methyl]蒽蒽醌-1,8-二羧酸盐的另一种离子分子晶体。其中,相应的环二酯也...