Iridium(I)-catalyzed regio- and enantioselective allylic amidation
作者:Om V. Singh、Hyunsoo Han
DOI:10.1016/j.tetlet.2007.08.009
日期:2007.10
Ir(I)-catalyzed intermolecularallylic amidation of ethyl allylic carbonates with soft nitrogen nucleophiles under completely "salt-free" conditions is described. A combination of [Ir(COD)Cl](2), a chiral phosphoramidite ligand L*, and DBU as a base in THF effects the reaction. The reaction appears to be quite general, accommodating a wide variety of R-groups and soft nitrogen nucleophiles, and proceeds