The reactivity of difluoro Au(III) cations supported by pyridine or imidazole ligands is reported. The Au(III)-F bond is found to be susceptible to metathesis by TMS reagents and reagents bearing acidic protons such as H-CC-Ph and HOAc. In the latter case the reactions are slower than analogous reactions reported by other groups where strong-trans donors are present opposite the Au-F bond. This, coupled with the inability to effect metathesis on only one Au-F bond in our system indicates the-trans effect is a key consideration in Au-F chemistry.
The reactivity of difluoro Au(III) cations supported by pyridine or imidazole ligands is
reported. The Au(III)-F bond is found to be susceptible to metathesis by TMS reagents and
reagents bearing acidic protons such as H-CC-Ph and HOAc. In the latter case the reactions
are slower than analogous reactions reported by other groups where strong -trans donors are
present opposite the Au-F bond. This, coupled with the inability to effect metathesis on only
one Au-F bond in our system indicates the -trans effect is a key consideration in Au-F
chemistry
The structure of Stang’s reagent [PhI(CN)][OTf] is confirmed by X-ray crystallography and is determined to be best described as an ion-pair in organic solution. It is found to be a...
The structure of Stang’s reagent [PhI(CN)][OTf] is confirmed by X-ray crystallography and is determined to be best described as an ion-pair in organic solution. It is found to be a strong Lewis acid, but reaction with pyridine ligands gives [Pyr-CN][OTf] salts via redox and represents the first path to a new derivative of the CDAP reagent widely used as an activation agent for polysaccharides.
The reactivity of difluoro Au(III) cations supported by pyridine or imidazole ligands is
reported. The Au(III)-F bond is found to be susceptible to metathesis by TMS reagents and
reagents bearing acidic protons such as H-CC-Ph and HOAc. In the latter case the reactions
are slower than analogous reactions reported by other groups where strong -trans donors are
present opposite the Au-F bond. This, coupled with the inability to effect metathesis on only
one Au-F bond in our system indicates the -trans effect is a key consideration in Au-F
chemistry
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