Journal
TETRAHEDRON
Volume 72, Issue 6, Pages 868-874Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2015.12.059
Keywords
Copper Consecutive reaction; 2-Halobenzamide; Sodium azide; Quinazolin-4(3H)-ones
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Funding
- Universities Natural Science Research Project of Jiangsu Province [151JB350002]
- Nanjing Medical University Education Development Foundation [2014NJMUZD019]
- National Natural Science Foundation of China [21172108]
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An efficient and practical copper-catalyzed consecutive synthesis of quinazolin-4(3H)-ones and pyrido 12,3-d]pyrimidin-4(3H)-ones from easily available 2-halobenzamides (or 2-halonicotinamides), aldehydes, and sodium azide has been developed, which gave the corresponding target products in 50-95% yields for 29 examples. This remarkable consecutive process involved sequential copper-catalyzed SNAr, reduction, cyclization, and oxidation. Notably, this work would provide a novel synthetic strategy for bioactive molecules containing quinazolinone class skeletons. (C) 2015 Elsevier Ltd. All rights reserved.
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