New Types of Planar Chiral [2.2]Paracyclophanes and Construction of One-Handed Double Helices
作者:Yasuhiro Morisaki、Risa Sawada、Masayuki Gon、Yoshiki Chujo
DOI:10.1002/asia.201601028
日期:2016.9.20
New types of planar chiral (Rp)‐ and (Sp)‐4,7,12,15‐tetrasubstituted [2.2]paracyclophanes were synthesized from racemic 4,12‐dihydroxy[2.2]paracyclophane as the starting compound. Regioselective dibromination and transformation afforded a series of planar chiral (Rp)‐ and (Sp)‐4,7,12,15‐tetrasubstituted [2.2]paracyclophanes, which can be used as chiral building blocks. In this study, left‐ and right‐handed
从外消旋的4,12-二羟基[2.2]对环芳族化合物为起始化合物合成了新型平面手性(R p)-和(S p)-4,7,12,15-四取代[2.2]对环芳族化合物。区域选择性二溴化和转化提供了一系列平面手性(R p)-和(S p)-4,7,12,15-四取代的[2.2]对环环烷,可用作手性构建基。在这项研究中,左手和右手双螺旋结构是通过化学选择性Sonogashira–Hagihara偶联构建的。双螺旋化合物是出色的圆偏振发光(CPL)发射体,具有大的摩尔消光系数,良好的光致发光量子效率和大的CPL不对称因子。