In the presence of a catalytic amount of (PPh3)AuCl and AgOTf, intermolecular hydroamination of unactivated alkynes with sulfonamides has been shown to proceed and give N-sulfonyl ketimines in medium to excellent yields.
The microwave-assisted ortho-alkylation of azine N-oxides with N-tosylhydrazones catalyzed by copper(<scp>i</scp>) iodide
作者:Abadh Kishor Jha、Nidhi Jain
DOI:10.1039/c5cc07833d
日期:——
A regioselective direct ortho-alkylation of azine N-oxides has been achieved under ligand-free conditions using copper(i) iodide and microwave conditions.
An efficient regioselective copper-catalyzed approach to the synthesis of 1,2,3-triazoles from N-tosylhydrazones and azides
作者:Zhishuo Zheng、Lei Shi
DOI:10.1016/j.tetlet.2016.10.033
日期:2016.11
An efficient regioselective copper-catalyzed strategy for the synthesis of 1,2,3-triazoles from N-tosylhydrazones and azides has been reported. This transformation opened a new route to synthesize 1,2,3-triazoles which is a common structural motif in natural products and pharmaceuticals. The reactions were smoothly under the optimized conditions and provided the desired product in good yields.