NHC-catalyzed C-O or C-N bond formation: Efficient approaches to α,β-unsaturated esters and amides
Simple and efficient NHC-catalyzed transformations of bromoenal or α,β-dibromoenal into α,β-unsaturated esters or amides with high stereoselectivity through C-O or C-N bond formation have been demonstrated. The NHC-catalyzed processes occur under mild con