A modified protocol has been identified for Pd-catalyzed intermolecular aminoacetoxylation of terminal and internal alkenes that enables the alkene to be used as the limiting reagent. The results prompt a reassessment of the stereochemical course of these reactions. X-ray crystallographic characterization of two of the products, together with isotopic labeling studies, show that the amidopalladation step switches from a cis-selective process under aerobic conditions to a trans-selective process in the presence of diacetoxyiodobenzene.
![Palladium-Catalyzed Intermolecular Aminoacetoxylation of Alkenes and the Influence of PhI(OAc)2 on Aminopalladation Stereoselectivity](https://www.iciq.org/wp-content/uploads/2014/03/Palladium-Catalyzed_jo-2013-00671q_0020.gif)