Recognition of a dicarboxylic acid with dipicolyl urea in solution and in solid phases: intramolecular hydrogen bond inhibiting both pyridine nitrogens from binding carboxyl groups
作者:Shyamaprosad Goswami、Subrata Jana、Swapan Dey、Debabrata Sen、Hoong-Kun Fun、Suchada Chantrapromma
DOI:10.1016/j.tet.2008.04.066
日期:2008.6
Recognition of a dicarboxylic acid in solution as well as in the solid phase by the pyridyl urea based pseudoditopic receptor 1 has been studied. The X-ray structures of both the receptor and its complex with 1,4-phenylenediacetic acid are also presented. Intramolecular hydrogen bonding inhibits both the pyridine ring nitrogens from forming hydrogen bonds with the carboxyl group and force the receptor
已经研究了通过吡啶基脲基假二位受体1识别溶液中以及固相中的二羧酸。还介绍了受体及其与1,4-苯二乙酸的复合物的X射线结构。分子内氢键抑制吡啶环上的两个氮原子都与羧基形成氢键,并迫使受体以单位方式起作用,使用顺式尿素酰胺部分结合二羧酸的羧基以形成2:1配合物。还比较了受体1与一元羧酸的结合。