Simple and Efficient Preparation of 2,5-Disubstituted Oxazoles via a Metal-Free-Catalyzed Cascade Cyclization
Changfeng Wan, Linfeng Gao, Qiang Wang, Jintang Zhang and Zhiyong Wang*
*Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Soft Matter Chemistry and Department of Chemistry, University of Science and Technology of China, Hefei, 230026, P. R. China, Email: zwang3ustc.edu.cn
C. Wan, L. Gao, Q. Wang, J. Zhang, Z. Wang, Org. Lett., 2010, 12, 3902-9305.
In a practical and simple synthesis of 2,5-disubstituted oxazoles via an iodine-catalyzed tandem oxidative cyclization, a wide range of common commercial aromatic aldehydes can be used as reaction substrates, which displayed excellent functional group compatibility.
see article for more examples
C. Wang, J. Zhang, S. Wang, J. Fan, Z. Wang, Org. Lett., 2010, 12, 2338-2341.