Y. Makioka et al., FACILE ISOMERIZATION OF TRIMETHYLSILYL KETENE ACETALS TO ALPHA-TRIMETHYLSILYL ESTERS CATALYZED BY LANTHANOID TRIFLUOROMETHANESULFONATES, Chemistry Letters, (3), 1994, pp. 645-648
Migration of trimethylsilyl group from oxygen to alpha-carbon in silyl
ketene acetals is effectively catalyzed by lanthanoid triflates under
mild conditions. Scope and limitation of this rearrangement are prese
nted.