期刊
TETRAHEDRON
卷 73, 期 38, 页码 5720-5724出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2017.08.011
关键词
3,4-Dihydroquinazoline; Ugi reaction aza-Wittig reaction; Isocyanide; Secondary amine
资金
- National Natural Science Foundation of China [21572075]
- 111 Project [B17019]
A new one-pot and regioselective synthesis of 3,4-dihydroquinazolines by Ugi/Staudinger/aza-Wittig sequence has been developed. The Ugi-type reaction of 2-azidobenzylisocyanide, aldehyde, secondary amine and acid produced an azide intermediate, which was then treated with triphenylphosphine to give 3,4-dihydroquinazolines regioselectively in good overall yields by Staudinger/aza-Wittig reaction at room temperature. (C) 2017 Elsevier Ltd. All rights reserved.
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