期刊
TETRAHEDRON LETTERS
卷 49, 期 36, 页码 5302-5308出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2008.06.082
关键词
-
资金
- National Natural Science Foundation of China [20772088]
Condensation reactions of o-phenylenediamine and two equivalents of acetophenone under gallium(III) triflate catalysis produce biaryl-substituted 1,5-benzodiazepines. Similar reactions of o-phenylenediamine or o-aminothiophenol and o-hydroxy chalcones lead to formation of functionalized 1,5-benzodiazepines and 1,5-benzothiazepines in good to excellent yields. The ortho-hydoxy group of chalcones is crucial for this unprecedented condensation process. (C) 2008 Elsevier Ltd. All rights reserved.
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