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DMAP-stabilized bis(silyl)silylenes as versatile synthons for organosilicon compounds.

ABSTRACT: DMAP-stabilized silylenes 1a-c are obtained from the reductive debromination of the corresponding dibromosilanes in the presence of DMAP. Their distinctly different thermal isomerization reactions via C-H bond activation, dearomative ring expansion and silyl migration are discussed. Furthermore, complexes 1 dissociate at elevated temperatures, providing the corresponding free silylenes in situ, which are even capable of single-site activation of H₂. Additionally, a potassium-substituted silicon-centered radical 2 is isolated from overreduction of ( ^t Bu₃Si)₂SiBr₂.

SUBMITTER: Holzner R

PROVIDER: S-EPMC9048797 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature

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DMAP-stabilized bis(silyl)silylenes as versatile synthons for organosilicon compounds.

Holzner Richard R Reiter Dominik D Frisch Philipp P Inoue Shigeyoshi S

RSC advances 20200121 6

DMAP-stabilized silylenes 1a-c are obtained from the reductive debromination of the corresponding dibromosilanes in the presence of DMAP. Their distinctly different thermal isomerization reactions via C-H bond activation, dearomative ring expansion and silyl migration are discussed. Furthermore, complexes 1 dissociate at elevated temperatures, providing the corresponding free silylenes in situ, which are even capable of single-site activation of H2. Additionally, a potas ...[more]

PMID: 35497772

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