A facile and direct synthetic method was developed for the construction of structurally important 2-aminothiophenes in moderate to excellent yields (up to 91%), via Cu(II)-catalyzed addition/oxidative cyclization of readily available thioamides with alkynoates under an air atmosphere.
L. Ge, Z. Wang, X. An, X. Luo and W. Deng, Org. Biomol. Chem., 2014, 12, 8473 DOI: 10.1039/C4OB01534G
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