Mechanism of Hydrolysis of 1,1,1-Trisubstituted Hyposilatranes and Hypogermatranes

Abstract

© 2019, Pleiades Publishing, Ltd. According to DFT calculations, hydrolysis of 1,1,1-trisubstituted hyposilatranes and hypogermatranes proceed in one stage and have lower activation energies than hydrolysis of the corresponding atranes and ocanes, and, unlike what is observed with the tricyclic and bicyclic analogs, the former reactions are characterized by positive Gibbs energies. The configuration of the hydrolysis products is stabilized by the transannular interactions N→X and O→X (X = Si, Ge) and intramolecular hydrogen bonding.