Mechanism of hydroboration in ether solvents. A model ab initio study
Abstract
The reaction of ethylene with an H3B·OH2 complex (a model for hydroboration in ether solvents) is indicated by ab initio calculations to resemble an SN2 displacement of the solvent by thy olefin; the solvent plays essentially no role in the transition state, but BH3 never becomes free during the reaction.