Axially chiral dilactams. Synthesis, racemization barriers and crystal structures
作者:Miloš Tichý、Luděk Ridvan、Petr Holý、Jiřı́ Závada、Ivana Cı́sařová、Jaroslav Podlaha
DOI:10.1016/s0957-4166(97)00612-5
日期:1998.1
prepared as the first representatives of axially chiral dilactams possessing a biaryl axis as the sole element of chirality. Their absolute configurations and inversion barriers were determined. The molecular structure and supramolecular self-assembly of the racemic dilactams directed by hydrogen bonding and aryl–aryl stacking was elucidated by single crystal diffraction analysis.
制备外消旋体和旋光性双内酰胺1和2作为轴向手性双内酰胺的第一代表,该双手性双内酰胺具有联芳基轴作为手性的唯一元素。确定了它们的绝对构型和反演壁垒。通过单晶衍射分析阐明了由氢键和芳基-芳基堆积指导的外消旋双内酰胺的分子结构和超分子自组装。