Centre de Recherche Paul Pascal -, CNRS & Univ. Bordeaux, 115 Ave. du Dr. Schweitzer, 33600, Pessac, France.
Aix Marseille Univ., CNRS, Centrale Marseille, iSm2, Marseille, France.
Angew Chem Int Ed Engl. 2023 Jul 10;62(28):e202304058. doi: 10.1002/anie.202304058. Epub 2023 Jun 6.
A rigid propeller-shaped conjugated triple macrocycle consisting of two nearly perfectly stacked benzene rings and three linking [5]helicene moieties has been synthesized using a glyoxylic Perkin approach. Analysis of the electron delocalization in this atypical aromatic molecule revealed global aromaticity and a 78 π-electron circuit along the edge of its triple loop, to the detriment of the two 6 π-electron circuits in the two stacked benzene rings.
一个由两个几乎完全堆叠的苯环和三个连接的[5]螺烯部分组成的刚性螺旋桨状共轭三大环已经通过糖醛基 Perkin 法合成。对这个非典型芳香分子中电子离域的分析表明，它具有全局芳香性和沿着三环边缘的 78π电子环，这不利于两个堆叠苯环中的两个 6π电子环。
