jo300532f_si_001.pdf (705.26 kB)
Epoxidation of Olefins with a Silica-Supported Peracid in Supercritical Carbon Dioxide under Flow Conditions
journal contribution
posted on 2012-05-18, 00:00 authored by Rossella Mello, Ana Alcalde-Aragonés, Andrea Olmos, María Elena González-Núñez, Gregorio AsensioAnhydrous 2-percarboxyethyl-functionalized silica (2b), a recyclable supported peracid, is a suitable reagent
to perform
the epoxidation of alkenes 1 in supercritical carbon
dioxide at 250 bar and 40 °C under flow conditions. This procedure
simplifies the isolation of the reaction products and uses only carbon
dioxide as a solvent under mild conditions. The solid reagent 2b can be easily recycled by a reaction with 30% hydrogen
peroxide in an acid medium.