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Synthesis and luminescence properties of U-shaped polycyclic molecules containing syn-facial functionalized
Teh-Chang Chou1, Kung-Ching Liao, Jin-Ju Lin
1Department of Chemistry and Biochemistry, National Chung Cheng University, Minsyong, Chiayi, Taiwan. chetcc@ccu.edu.tw
Abstract:
[reaction: see text] Rigid U-shaped molecules containing syn-facially situated quinoxaline rings have been synthesized in three steps, by a combination of the Diels-Alder reaction, the ruthenium-catalyzed oxidation, and the Zn(OAc)(2)-catalyzed condensation of the resulting bis-alpha-diketones with benzene-1,2-diamines. The unsymmetric bis-quinoxalines, with electronically different substituents, and the quinoxaline ring-attached alpha-diketones were also prepared. Their luminescence properties were examined and described.
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