Highly Regioselective Carbamoylation of Electron-Deficient Nitrogen Heteroarenes with Hydrazinecarboxamides
Zeng-Yang He, Chao-Fan Huang and Shi-Kai Tian*
*Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China, Email: tianskustc.edu.cn
Z.-Y. He, C.-F. Huang, S.-K. Tian, Org. Lett., 2017, 19, 4850-4853.
see article for more reactions
A copper/acid-catalyzed oxidative carbamoylation of various electron-deficient nitrogen heteroarenes (isoquinolines, quinolines, pyridines, phenanthridines, quinoxalines, and phthalazines) with hydrazinecarboxamide hydrochlorides provides structurally diverse nitrogen-heteroaryl carboxamides as single regioisomers in moderate to excellent yields.
see article for more examples
isoquinolines, tert-Butyl hydroperoxide