Synthesis, molecular and crystal structure of spirocyclopropyl derivatives of lupane series and their ability to induce cholesteric mesophase in nematic solvents
作者:Alexander N. Semenenko、Nikolay L. Babak、Svitlana V. Shishkina、Vladimir I. Musatov、Alexander V. Mazepa、Victoria V. Lipson
DOI:10.1016/j.molstruc.2018.06.009
日期:2018.11
analysis. These compounds may be used as chiral dopants for cholesteric liquid-crystal compositions which are applied in the surface stabilized cholesteric texture and polymer stabilized cholesteric texture displays with low power consumption. The relationship between stereostructure of the synthesised substances and their ability to induce cholesteric mesophase in different nematic solvents were examined
摘要 合成了新的羽扇豆系列螺环丙基衍生物,并通过X射线分析确定了它们的空间结构。这些化合物可用作胆甾型液晶组合物的手性掺杂剂,其应用于表面稳定的胆甾型结构和聚合物稳定的胆甾型结构显示器,具有低功耗。检查了合成物质的立体结构与其在不同向列溶剂中诱导胆甾醇中间相的能力之间的关系。螺旋扭转力的最高值|β| (213,8 ± 1,1) 和 (230,5 ± 4,3) mkm-1mol·pats-1 在作为向列溶剂的 4'-pentyl-1,1'-biphenyl-4-carbоnitrile 中显示为(1S,2S)-1-(1-phenyl-3-(4-tolyl)-1H-pyrazole-4-yl)-2,2'-spirocyclopropylallobetulone 和 (1S,