Unexpected narcissistic self-sorting at molecular and supramolecular levels in racemic chiral calixsalens
作者:Małgorzata Petryk、Katarzyna Biniek、Agnieszka Janiak、Marcin Kwit
DOI:10.1039/c6ce00256k
日期:——
centres. Calixsalens form tail-to-tail dimers that are assembled into higher-order structures in the solid state. The formation of these dimers is accomplished by enantioselective self-recognition of chiral calixsalen units driven by non-covalent interactions only.
2-羟基间苯二甲醛衍生物与外消旋的反式-1,2-二氨基环己烷的[3 + 3]环缩合导致形成三角形花瓶状六亚胺,称为杯芳烃。Calixsalen的形成是高度立体选择性的,产生的外消旋混合物包含在其立体成因中心具有绝对构型的all-R或all-S的同手性产物。杯形尾巴形成从尾到尾的二聚体,这些二聚体以固态组装成更高阶的结构。这些二聚体的形成是通过仅由非共价相互作用驱动的手性杯芳烃单元的对映选择性自我识别来完成的。