An expedient access to the first optically pure ruthenium complexes containing C1-symmetric cyclic (alkyl)(amino)carbene ligands is reported. They demonstrate excellent catalytic performances in asymmetric olefin metathesis with high enantioselectivities (up to 92% ee). Preliminary mechanistic insights provided by density functional theory models highlight the origin of the enantioselectivity.
报道了获得第一个包含 C1 对称环状(烷基)(
氨基)卡宾
配体的光学纯
钌配合物的便利途径。它们在不对称烯烃复分解反应中表现出优异的催化性能,具有高对映选择性(高达 92% ee)。密度泛函理论模型提供的初步机械见解突出了对映选择性的起源。