手性纳米石墨烯螺旋桨嵌入六个对映体稳定的[5]螺旋芳烃单元。
Chiral Nanographene Propeller Embedding Six Enantiomerically Stable [5]Helicene Units.
机构信息
Aix Marseille Université , CNRS, CINAM, 13288 Marseille, France.
Aix Marseille Université , CNRS, Centrale Marseille, ISM2, 13288 Marseille, France.
出版信息
J Am Chem Soc. 2017 Dec 27;139(51):18508-18511. doi: 10.1021/jacs.7b07622. Epub 2017 Oct 25.
A one-step synthesis of a nanographene propeller with a D-symmetry was obtained starting from 7,8-dibromo[5]helicene by Yamamoto nickel(0) couplings. It afforded a chiral polyaromatic hydrocarbon (PAH) embedding six enantiomerically stable [5]helicene units. This dense accumulation of helical strain resulted in a distorted geometry, but stable stereochemistry. The conformational, structural, chiroptical, and photophysical properties of the molecule are reported.
通过 Yamamoto 镍（0）偶联反应，从 7,8-二溴[5]螺环芳烃出发，一步合成了具有 D 对称性的纳米螺桨。它提供了一种手性多环芳烃（PAH），其中嵌入了六个对映体稳定的[5]螺环芳烃单元。这种螺旋应变的密集堆积导致了扭曲的几何形状，但稳定的立体化学。报道了分子的构象、结构、手性光学和光物理性质。
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