A unique 1,4-silyl group migration from carbon to carbon: Formation of benzylic silane in the reaction of sterically hindered benzylic telluride with alkyllithium

• Lithium-tellurium exchange reaction. • 1,4-silyl group migration from carbon to carbon. • Generation of pentacoordinated silicate intermediate thru DFT calculations. The reaction of sterically hindered benzylic telluride bearing 2,4,6-tris[bis(trimethylsilyl)methyl]phenyl (Tbt) group with 2.0 eq. of n -BuLi and HSi(OMe) 3 afforded a 1,4-silicon rearrangement product. This rearrangement is made possible by the intermediacy of a 5-membered...