Direct epoxidation of olefins catalyzed by heteropolyoxometalates with molecular oxygen and recyclable reductant

A new epoxidation system is reported in this communication. Heteropolyoxometalates catalyst/recyclable reductant 2-ethylanthrahydroquinone/O-2 is employed for epoxidation of olefins. The reductant can be regenerated by catalytic hydrogenation without consumption. (C) 2001 Elsevier Science B.V. All rights reserved.A new epoxidation system is reported in this communication. Heteropolyoxometalates catalyst/recyclable reductant 2-ethylanthrahydroquinone/O-2 is employed for epoxidation of olefins. The reductant can be regenerated by catalytic hydrogenation without consumption. (C) 2001 Elsevier Science B.V. All rights reserved