Intermolecular Cyclopropanation versus CH Insertion in RhII-Catalyzed Carbenoid Reactions
作者:Paul Müller、Sarah Tohill
DOI:10.1016/s0040-4020(00)00076-4
日期:2000.3
The product ratio of intermolecular insertion and cyclopropanation in transition metal-catalyzed diazo decompositions depends strongly upon the metal, its ligands and upon the substituents of the diazo compound. Ethyl diazoacetate (2a) reacts with cyclohexene (1) almost exclusively by cyclopropanation. However, diazomalonate (2d) and methyl 2-diazophenylacetate (2e) in the presence of RhII catalysts