Mild and Highly Chemoselective Oxidation of Thioethers Mediated by Sc(OTf)<sub>3</sub>
作者:Mizio Matteucci、Gurdip Bhalay、Mark Bradley
DOI:10.1021/ol026947i
日期:2003.2.1
[reaction: see text] Catalytic Sc(OTf)(3) greatly increases the efficiency of hydrogen peroxide mediated monooxidation of alkyl-aryl sulfides and methyl cysteine containing peptides. The method is high yielding, compatible with many widely used protecting groups, suitable for solid-phase applications and proceeds with minimum over-oxidation.
The total solidphasesynthesis of an analogue of the B ring of nisin was achieved, in a biomimetic fashion, via the solidphase diastereoselective cyclisation of a dehydrothiol-containing peptide.