Oxidation reactions catalysed by titanium- and chromium-containing silicalites
Abstract
While the titanium silicalite-1 (TS-1)–tert-butyl hydroperoxide (TBHP) combination exhibits remarkable activity and selectivity in the oxidative cleavage of the C–C double bond of silyl enol ethers to produce dicarboxylic acids, the chemoselective oxidation of thioethers to sulfoxides without generation of sulfones is achieved using chromium silicalite-2 (CrS-2)–H2O2.