Journal
TETRAHEDRON
Volume 81, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2020.131918
Keywords
Diimidazoquinazoline; Ullmann reaction; Cross-coupling; Copper-catalyzed; 2-Bromo-1H-imidazole
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Funding
- NSFC of China [21702078, 21772070]
- Natural Science Foundation of Jiangsu Higher Education Institution [17KJA150003]
- TAPP
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2,3-Bisaryldiimidazo [1,2-a:1',2'-c]quinazolines were successfully synthesized via a copper-catalyzed reaction, with good yields. This reaction employed a double Ullmann cross-coupling to build two new Csp(2)-N bonds in one-pot procedure, resulting in the formation of a tetracyclic heterocycle bearing four nitrogen atoms.
2,3-Bisaryldiimidazo [1,2-a:1',2'-c]quinazolines were obtained via a copper-catalyzed reaction between 2-(2-bromophenyl)-4,5-diphenyl-1H-imidazole and 2-bromo-1H- imidazole in good yields. This double Ullmann cross-coupling built two new Csp(2)-N bonds and fused tetracyclic heterocycle bearing four nitrogen atoms in one-pot procedure. (C) 2021 Elsevier Ltd. All rights reserved.
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