Unimolecular alcoholysis of organosilicon halides of the type (Me<sub>3</sub>Si)<sub>2</sub>C(SiMe<sub>2</sub>OMe)(SiR′<sub>2</sub>X). Anchimeric assistance by and migration of the OMe group
作者:Colin Eaborn、Paul D. Lickiss、Sabah T. Najim、M. Novella Romanelli
DOI:10.1039/c39850001754
日期:——
The compound R2C(SiMe2Ome)(SiMe2Cl)(R = SiMe3 throughout) reacts more rapidly with CF3CH2OH than with MeOH, and R2C(SiMe2OMe)(SiPh2Br) reacts with EtOH to give exclusively the rearranged product R2C(SiMe2OEt)(SiPh2OMe), indicating that the rate-determining step of the solvolyses involves formation of a methoxy-bridged cation; migration of the OMe group also occurs in the reaction of the bromide with