Synthesis and stereochemical assignments of diastereomeric Ni(II) complexes of glycine Schiff base with (<i>R</i>)-2-(<i>N</i>-{2-[<i>N</i>-alkyl-<i>N</i>-(1-phenylethyl)amino]acetyl}amino)benzophenone; a case of configurationally stable stereogenic nitrogen
作者:Hiroki Moriwaki、Daniel Resch、Hengguang Li、Iwao Ojima、Ryosuke Takeda、José Luis Aceña、Vadim A Soloshonok
DOI:10.3762/bjoc.10.41
日期:——
and a Ni(II) salt, these ligands were transformed into diastereomeric complexes, as a result of the configurational stability of the stereogenic nitrogen atom. Different diastereomeric ratios were observed depending on the substituent R introduced in the starting ligand, and stereochemical assignments were based on X-ray analysis, along with NMR studies and optical rotation measurements.
通过氮原子的烷基化制备了一系列衍生自 α-苯基乙胺和 2-氨基二苯甲酮的手性配体。在与甘氨酸和 Ni(II) 盐反应后,由于立体氮原子的构型稳定性,这些配体转化为非对映体配合物。根据起始配体中引入的取代基 R 观察到不同的非对映体比率,立体化学分配基于 X 射线分析,以及 NMR 研究和旋光度测量。