Microwave-induced stereoselective conversion of dialkyl 2-(imido-N-yl)-3-(triphenylphosphoranylidene) butanedioates to electron-poor (Z)-N-vinylimides in the presence of potassium dihydrogen phosphate and sodium dihydrogen phosphate in solvent-free c

摘要

Potassium dihydrogen phosphate powder and sodium dihydrogen phosphate powder were found to catalyze stereoselective conversion of dialkyl 2-(imido-N-yl)-3-(triphenylphosphoranylidene)butanedioates to electron-poor (Z)-N-vinylimides in solvent-free conditions under microwave irradiation in 5-6 minutes in high conversions.