A new trifluoromethylated sulfonamide phosphine ligand for Ag(<scp>i</scp>)-catalyzed enantioselective [3 + 2] cycloaddition of azomethine ylides
作者:Yuanqi Wu、Bing Xu、Bing Liu、Zhan-Ming Zhang、Yu Liu
DOI:10.1039/c8ob02922a
日期:——
A newly developed Ming-Phos ligand with a 3,5-bis(trifluoromethyl)phenyl substituent was demonstrated to be highly efficient for Ag-catalyzed asymmetric [3 + 2] cycloaddition reactions of azomethineylides with maleimides, cyclopentene-1,3-diones, and N-(2-t-butylphenyl)maleimide. Being easily prepared on the gram scale in one step, the ligand in combination with a Ag catalyst enables the synthesis