期刊
TETRAHEDRON
卷 65, 期 17, 页码 3409-3416出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2009.02.040
关键词
Palladium; The Ullmann reaction; 6,7-Dihydro-5H-dibenzo[c,e]azepine; Biaryls
资金
- National Natural Science Foundation of China [20872112]
- New Century Excellent Talents in University [NCET-06-0711]
- Zhejiang Provincial Natural Science Foundation of China [Y407116]
A novel palladium-catalyzed Ullmann protocol is described for the synthesis of 6,7-dihydro-5H-dibenzo[c,e]azepines and biaryls. In the presence of Pd(OAc)(2) and KOAc, intramolecular or intermolecular Ullmann coupling of aryl halides proceeds efficiently under ligand-free and aerobic conditions to afford the corresponding 6,7-dihydro-5H-dibenzo[c,e]azepines and biaryls in moderate to excellent yields. (C) 2009 Elsevier Ltd. All rights reserved.
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