Brominated thiophenes as precursors in the preparation of brominated and arylated anthraquinones.
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 pi-systems with interspersed anthraquinone units.
Thiemann
Thies
T
Interdisciplinary Graduate School of Engineering Sciences Kyushu University, Kasuga-Shi, Fukuoka, Japan. thies@cm.kyushu-u.ac.jp
Tanaka
Yasuko
Y
Iniesta
Jesus
J
D000880:Anthraquinones / Q000138:chemical synthesis*; D001966:Bromine; D002723:Chlorobenzoates / Q000737:chemistry; D054879:Halogenation; D009285:Naphthoquinones / Q000737:chemistry; D013876:Thiophenes / Q000737:chemistry*
D000880:Anthraquinones; D002723:Chlorobenzoates; D009285:Naphthoquinones; D013876:Thiophenes; C000433:3-chloroperbenzoic acid; D001966:Bromine