Abstract
Developments of various types of boron-containing π-conjugated compounds are described in this chapter. Borole is one of the representative boracycles, which has a significant antiaromatic character. Several new borole compounds combined with heteroaryl rings have been synthesized and their unusual properties have been revealed. In the course of this chemistry, a new photoreactive boron compound, boryl-substituted dibenzoborepin, was obtained, which underwent a 4π-electrocyclic bora-Nazarov reaction. A series of planarized triphenylboranes has been also designed and synthesized as the stable organoboron compounds without steric protection of the boron atoms. Comprehensive studies on their chemical reactivity as well as photophysical and electronic properties have been conducted. A part of this compound class can be regarded as a model system of boron-doped graphenes and showed intriguing properties, such as the thermoresponsive complexation with Lewis basic species and photodissociation of the Lewis acid-base complex.
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Yamaguchi, S. (2015). Boron-Containing π-Electron Systems. In: Akasaka, T., Osuka, A., Fukuzumi, S., Kandori, H., Aso, Y. (eds) Chemical Science of π-Electron Systems. Springer, Tokyo. https://doi.org/10.1007/978-4-431-55357-1_21
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DOI: https://doi.org/10.1007/978-4-431-55357-1_21
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