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Synthesis and reactions of silanes containing two triflate groups

1988; Elsevier BV; Volume: 340; Issue: 1 Linguagem: Inglês

10.1016/0022-328x(88)80546-1

1872-8561

Krzysztof Matyjaszewski, Y. L. Chen,

Silicone and Siloxane Chemistry

1,2-Bis(trifluoromethanesulfonyloxy)tetramethyldisilane (1) and dimethylsilylbis-(trifluoromethanesulfonate) (2) have been prepared via displacement of phenyl, chloro, and methyl groups in the corresponding mono- and di-silanes. Phenyl groups are displaced more rapidly than chloro and methyl groups. The unreacted groups are strongly deactivated by the presence of a triflate group at the same silicon atom. The deactivation is much weaker when a triflate group is present at the adjacent silicon atom. Alcohols and amines react more rapidly with ditriflates than with monotriflates.