Ultra‐fast One‐Handed Helix Induction and Its Static Helicity Memory in a Poly(biphenylylacetylene) with a Catalytic Amount of Chiral Ammonium Salts
作者:Mayu Fukuda、Mai Morikawa、Daisuke Hirose、Tsuyoshi Taniguchi、Tatsuya Nishimura、Eiji Yashima、Katsuhiro Maeda
DOI:10.1002/anie.202217020
日期:2023.4.3
helix induction and subsequent static helicity memory in a poly(biphenylylacetylene) were achieved using a catalytic amount of nonracemic ammonium salts with non-coordinating tetrakis[3,5-bis(trifluoromethyl)phenyl]borate as a counter anion. Helix induction relies on crown-ether-like specific intermolecular complex formation of the two methoxymethoxy groups of the biphenyl pendants with chiral ammonium
使用催化量的非外消旋铵盐和非配位四 [3,5-双(三氟甲基)苯基] 硼酸盐作为抗衡阴离子,实现了聚(联苯基乙炔)中的超快速螺旋感应和随后的静态螺旋记忆。螺旋诱导依赖于联苯悬垂物的两个甲氧基甲氧基在特定芳族溶剂中与手性铵形成类似冠醚的特定分子间络合物。