Dynamic behaviour of monohaptoallylpalladium species: internal coordination as a driving force in allylic alkylation chemistry

摘要: Contemporary catalytic procedures involving alkylpalladium(II) have enriched the arsenal of synthetic organic chemistry. Those transformations usually rely on internal coordination through “directing groups”, carefully designed to maximize efficiency and regioselectivity. Herein, we report structural reactivity studies a series internally coordinated monohaptoallylpalladium complexes. These species enable direct spectroscopic observation theoretical study π–σ–π interconversion processes. They further display unusual dynamic behavior which should be relevance chemistries beyond allylic alkylation.