Catalysed epoxidation of olefin by hydrogen peroxide - in liq. phase with high selectivity in required epoxide

摘要

An olefin is epoxidised by H2O2 at 0-120 (70-120) degrees C in the presence of a catalyst which is a metal of Gps. IVA, VA or VIA, pref. Mo or W, or a mineral deriv. or mineral or organic complex of such a metal. The reaction takes place in the liq. phase, pref. using an inert organic solvent or mixt. of solvents in which the H2O2 is soluble. The H2O present in the reaction medium is removed continuously by distn. or by sweeping it along in a gaseous stream. The process is easily carried out and shows a high selectivity of the required epoxide prod.