Generation of endo-6-(trimethylsilyl)bicyclo[2.2.1] hept-2-yl carbene and syn-6-(trimethylsilyl)bicycle[2.2.2]oct-2-yl carbene leads to preferential 1,3-migration of the trimethylsilyl group to the carbenic center, while anti-6-(trimethylsilyl)bicycle[2.2.2]oct-2-yl carbene gives preferential migration of the trimethylsilyl-activated hydrogen atom.
Generation of endo-6-(trimethylsilyl)bicyclo[2.2.1] hept-2-yl carbene and syn-6-(trimethylsilyl)bicycle[2.2.2]oct-2-yl carbene leads to preferential 1,3-migration of the trimethylsilyl group to the carbenic center, while anti-6-(trimethylsilyl)bicycle[2.2.2]oct-2-yl carbene gives preferential migration of the trimethylsilyl-activated hydrogen atom.
Nucleophilic displacement of methide from silicon. Steric compression of geminal trimethylsilyl groups?
作者:Wolfgang Kirmse、Frank Söllenböhmer
DOI:10.1039/c39890000774
日期:——
6,6-Bis(trimethylsilyl)norbornan-endo-2-ol (6) undergoes base-induced intramolecular displacement of a Si–Me group with formation of (9), in contrast to the monosilylated analogue (7).