92886-88-9Relevant academic research and scientific papers
Investigation of N-Heterocyclic Carbene-Supported Group 12 Triflates as Pre-catalysts for Hydrosilylation/Borylation
Roy, Matthew M. D.,Ferguson, Michael J.,McDonald, Robert,Rivard, Eric
, p. 18236 - 18246 (2016/12/16)
N-Heterocyclic carbene (NHC) complexes of Cd and Hg triflates (OTf) were prepared and their attempted conversion into rare cadmium and mercury hydrides was explored. In contrast to zinc, which forms stable [ZnH]+complexes with NHCs, the heavier Cd and Hg congeners could not be formed; the increased instability of Cd-H and Hg-H units was rationalized with the aid of computations. It was also discovered that the dimeric adduct [IPr?Cd(μ-OTf)2]2(IPr=[(HCNDipp)2C:]; Dipp=2,6-iPr2C6H3) is an active precatalyst for the hydrosilylation and hydroborylation of hindered aldehydes and ketones. The related zinc congener was inactive as a catalyst highlighting a distinct advantage of using heavy Group 12 metals to promote catalytic hydrosilylation/borylation.
Preparation of New Monomeric, Oligomeric, and Polymeric Silyl Triflates
Uhlig, Wolfram
, p. 47 - 54 (2007/10/02)
The highly reactive silyl triflates R3SiOSO2CF3 are valuable reagents in organosilicon chemistry.New triflate derivatives of mono- and oligosilanes have been prepared by substitution of phenyl groups or hydrogen atoms for the trifluoromethanesulfonyl group.The presence of the electron-withdrawing triflate group leads to a strong deactivation of the other substituents at the silicon atom, and the displacement of a second phenyl group at the same silicon atom is much slower than the first step.For this reason in the case of phenylated oligosilanes stepwisemonosubstitution of the silicon atoms has been found.Other new oligomeric silyl triflates are obtained by reaction of silanediyl(triyl) bis(tris)(trifluoromethanesulfonates) with lithium derivatives of organosilicon compounds.Finally, the cleavage of silicon - phenyl bonds of poly by CF3SO3H leads to triflate derivatives of polysilanes. Key Words: Silyl triflates / Organosilanes
THE SYNTHESIS OF FUNCTIONALISED SILYLTRIFLATES
Bassindale, Alan R.,Stout, Tim
, p. C1 - C3 (2007/10/02)
The cleavage of R2SiXY (R = alkyl, phenyl; X = H, Cl, Y = α-Np, Ph, Cl, H) by triflic acid is selective, leading to new difunctional silyltriflates, R2SiXOTf, with the relative ease of cleavage of Si-Y being, α-Np > Ph > Cl > H >> Me, Et, But.
