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Molecules 2009, 14(3), 1013-1031; doi:10.3390/molecules14031013
Article

Brominated Thiophenes as Precursors in the Preparation of Brominated and Arylated Anthraquinones

1,* , 2 and 3
1 Interdisciplinary Graduate School of Engineering Sciences Kyushu University, 6-1, Kasuga-koh-en, Kasuga-shi, Fukuoka 816-8580, Japan 2 Institute of Materials Chemistry and Engineering, Kyushu University, 6-1, Kasuga-koh-en, Kasugashi, Fukuoka 816-8580, Japan 3 Department of Physical Chemistry, University of Alicante, E-03080 Alicante, Spain
* Author to whom correspondence should be addressed.
Received: 21 January 2009 / Revised: 18 February 2009 / Accepted: 24 February 2009 / Published: 4 March 2009
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Abstract

Brominated anthraquinones can be synthesized directly from bromothiophenes when these are reacted with 1,4-naphthoquinones in the presence of meta-chloroperoxybenzoic acid. The bromoanthraquinones are versatile building blocks in the preparation of arylated anthraquinones and of extended π-systems with interspersed anthraquinone units.
Keywords: Anthraquinone; Oxidative cycloaddition; Suzuki cross coupling; UV spectroscopy Anthraquinone; Oxidative cycloaddition; Suzuki cross coupling; UV spectroscopy
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).
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Thiemann, T.; Tanaka, Y.; Iniesta, J. Brominated Thiophenes as Precursors in the Preparation of Brominated and Arylated Anthraquinones. Molecules 2009, 14, 1013-1031.

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