α-Ketocarbenium ions derived from orthoquinone-containing polycyclic aromatic compounds
α-Ketocarbenium ions derived from orthoquinone-containing polycyclic aromatic compounds
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源自含邻醌的多环芳香族化合物的α-酮碳鎓离子
DOI：
10.1021/acs.orglett.8b00682
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发表时间：
2018
期刊：
影响因子：
5.2
通讯作者：
H. Ishikawa
中科院分区：
文献类型：
--
作者：
K. Urakawa;Y. Kawabata;M. Matsuda;M. Sumimoto;H. Ishikawa
在硫酸、三氟甲磺酸和氟磺酸等布朗斯特酸存在下，合成了含邻醌多环芳香族化合物，生成了α-酮碳正离子。所制备的α-酮碳正离子通过芳香部分的共轭而稳定。此外，还观察到了α-酮碳正离子的独特吸收特性，并根据计算的吸收光谱进行了鉴定。研究表明，该结构稳定了新发现的含邻醌多环芳香族化合物衍生的α-酮碳正离子。
α-Ketocarbenium ions derived from synthesized orthoquinone-containing polycyclic aromatic compounds were generated in the presence of Brønsted acids such as sulfuric acid, trifluoromethanesulfonic acid, and fluorosulfonic acid. The prepared α-ketocarbenium ions were stabilized by conjugation of the aromatic moiety. In addition, unique absorption properties of the α-ketocarbenium ions were observed and identified on the basis of the calculated absorption spectra. It was suggested that the zigzag-shaped architecture stabilizes the newly discovered α-ketocarbenium ions derived from orthoquinone-containing polycyclic aromatic compounds.