Iterative Assembly of Nitrile Oxides and Ynamides: Synthesis of Isoxazoles and Pyrroles
Changwei Chen and Sunliang Cui*
*Institute of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China, Email: slcuizju.edu.cn
C. Chen, S. Cui, J. Org. Chem., 2019, 84, 12157-12164.
DOI: 10.1021/acs.joc.9b01430 (free Supporting Information)
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A Cu(I)-free cyclization of nitrile oxides with terminal ynamides provides isoxazoles, which could engage in another cyclization with internal ynamides in the presence of Au(I) catalyst to deliver pyrroles. Both reactions can be carried out in a two-step, one-pot procedure.
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