6533b7d1fe1ef96bd125c300

RESEARCH PRODUCT

Epoxidation of Olefins with a Silica-Supported Peracid in Supercritical Carbon Dioxide under Flow Conditions

Rossella MelloAna Alcalde-aragonésMaría Elena González-núñezGregorio AsensioAndrea Olmos

subject

Solventchemistry.chemical_compoundFlow conditionsSupercritical carbon dioxidechemistryReagentOrganic ChemistryCarbon dioxideAnhydrousOrganic chemistryHydrogen peroxide

description

Anhydrous 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.

https://doi.org/10.1021/jo300532f