作者:Michel Rickhaus、Andreas Vargas Jentzsch、Lara Tejerina、Isabell Grübner、Michael Jirasek、Timothy D. W. Claridge、Harry L. Anderson
DOI:10.1021/jacs.7b10710
日期:2017.11.22
The synthesis of ethyne-linked porphyrinnanorings has been achieved by template-directed Sonogashira coupling. The cyclic hexamer and octamer are predicted by density functional theory to adopt low symmetry conformations, due to dihedral twists between neighboring porphyrin units, but their symmetries are effectively D6h and D8h, respectively, in solution by 1H NMR. The fluorescence spectra indicate
乙炔连接的卟啉纳米环的合成已通过模板导向的Sonogashira偶联实现。密度泛函理论预测环状六聚体和八聚体由于相邻卟啉单元之间的二面体扭曲而采用低对称构象,但通过1 H NMR ,它们的对称性分别为D 6h和D 8h。荧光光谱表明这些纳米环的单线激发态高度离域。
Metallacycles and methods of making the same
申请人:Lu Kuang-Lieh
公开号:US20090082574A1
公开(公告)日:2009-03-26
The present invention provides for novel metallacycles and processes for making the same.
本发明提供了一种新型金属环化合物和制备方法。
Synthesis and Characterization of Hexakis(4-pyridylethynyl)benzene and Hexakis(5-pyrimidylethynyl)benzene
Two new members of snowflake-shaped carbon-rich molecules possessing nitrogen-heterocycles as functional end groups, hexakis(4-pyridylethynyl)benzene (1) and hexakis(5-pyrimidylethynyl)benzene (2), have been prepared by six-fold Sonogashira cross-coupling reaction of hexabromobenzene with 4-ethynylpyridine and 5-ethynylpyrimidine, respectively.