The first 1,2-Brook rearrangements with bis(dimethyl-phenylsilyl)
ketone, initiated after addition of different C- and S-nucleophiles,
are described. The resulting, newly formed carbanion can be trapped
with electrophiles thus paving the way for utilizing bissilyl ketones
as formyl dianion equivalents in the future.
Brook rearrangement - bissilyl ketones - formyl
anion - organolithium species - silyl migration