聚乙炔[3]轮烷：通过二羰基钴配合物合成及稳定性增强
Polyyne [3]Rotaxanes: Synthesis via Dicobalt Carbonyl Complexes and Enhanced Stability.
作者信息
Patrick Connor W, Woods Joseph F, Gawel Przemyslaw, Otteson Claire E, Thompson Amber L, Claridge Tim D W, Jasti Ramesh, Anderson Harry L
机构信息
Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Oxford, OX1 3TA, UK.
Department of Chemistry and Biochemistry, Materials Science Institute, University of Oregon, Eugene, OR 97403, USA.
出版信息
Angew Chem Int Ed Engl. 2022 Mar 1;61(10):e202116897. doi: 10.1002/anie.202116897. Epub 2022 Jan 20.
New strategies for synthesizing polyyne polyrotaxanes are being developed as an approach to stable carbyne "insulated molecular wires". Here we report an active metal template route to polyyne [3]rotaxanes, using dicobalt carbonyl masked alkyne equivalents. We synthesized two [3]rotaxanes, both with the same C polyyne dumbbell component, one with a phenanthroline-based macrocycle and one using a 2,6-pyridyl cycloparaphenylene nanohoop. The thermal stabilities of the two rotaxanes were compared with that of the naked polyyne dumbbell in decalin at 80 °C, and the nanohoop rotaxane was found to be 4.5 times more stable.
合成聚炔聚轮烷的新策略正在被开发，作为一种制备稳定的卡宾“绝缘分子导线”的方法。在此，我们报道了一种使用二羰基钴掩蔽的炔烃等价物合成聚炔[3]轮烷的活性金属模板路线。我们合成了两种[3]轮烷，它们都具有相同的碳聚炔哑铃状组分，一种带有基于菲咯啉的大环，另一种使用2,6-吡啶基环对亚苯基纳米箍。在80°C的萘烷中，将这两种轮烷的热稳定性与裸聚炔哑铃状组分的热稳定性进行了比较，发现纳米箍轮烷的稳定性高4.5倍。
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