著者

廣戸 聡 忍久保 洋

出版者

社団法人 有機合成化学協会

雑誌

有機合成化学協会誌 (ISSN:00379980)

巻号頁・発行日

vol.76, no.1, pp.37-44, 2018-01-01 (Released:2018-01-16)

参考文献数

37

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Recently, π-conjugated molecules with curved-π surface have attracted considerable interest for their unique properties originating from their curved structures. However, most of them consist of only carbon and hydrogen atoms. In these situations, we have developed novel synthetic protocols for construction of distorted structures directly from 2D π-conjugated molecules under mild reaction conditions. By applying phenol and aniline oxidation methods, we have succeeded in the synthesis of highly distorted cyclophanes, π-extended heterohelicenes, and highly twisted porphyrin oligomers. Furthermore, we have succeeded in the synthesis of a nitrogen-embedded buckybowl as a novel bowl-shaped π-conjugated molecule with a pyrrolic nitrogen in its skeleton. These heteroatom containing curved-π conjugated molecules exhibit unique characteristics due to the combination of the curved structure with heteroatoms such as circularly polarized luminescence, strong C60 binding, and near IR electrochromism. We believe that the chemistry of heteroatom containing curved-π conjugated molecules would enhance the potential of three-dimensional π-conjugated molecules for molecular materials.

著者

忍久保 洋 大蔦 幸一郎

出版者

The Society of Synthetic Organic Chemistry, Japan

雑誌

有機合成化学協会誌 (ISSN:00379980)

巻号頁・発行日

vol.57, no.1, pp.13-23, 1999-01-01 (Released:2009-11-16)

参考文献数

26

被引用文献数

8 10

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Two types of reactions with organomanganese have been examined. The first is a reaction of manganate reagents with carbon-carbon multiple bond. Catalytic version of these reactions is also disclosed. The second is a reaction of gem-dibromo compounds such as gem-dibromocyclopropane and dibromomethyltrialkylsilane with trialkylmanganate (II). The reaction was initiated by bromine-manganese exchange.

著者

忍久保 洋

出版者

公益社団法人 日本化学会

雑誌

化学と教育 (ISSN:03862151)

巻号頁・発行日

vol.68, no.6, pp.268-269, 2020-06-20 (Released:2021-06-01)

参考文献数

6

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反芳香族化合物は不安定な化合物であるが,それを上下に接近させて重ねると芳香族化合物になり,安定化することが分かってきた。これまで,芳香族性の起源は二次元的なπ電子の広がりであると考えられてきた。しかし最新の研究により,2つの分子の間の三次元的なπ電子の広がりによっても芳香族性が生じることが示された。また,反芳香族化合物が芳香族化合物よりも互いに接近しやすいことも分かってきた。分子が近づいて電荷が移動しやすくなるため,有機半導体などへの応用が期待される。