Epoxidation of Cis-cyclooctene with Hydrogen Peroxide Catalyzed by Lindqvist Type Polyoxometalates

In our study, a method for the epoxidation of cis-cyclooctene was researched using a series of Lindqvist type POMs Cp*2MoxW6-xO17 (x=0, 2, 4, 6) and [Cp*MoxW6-xO18](-) (x=0, 1, 5, 6) as a catalyst in the presence of 30 % H2O2 as a green oxidant. This catalytic system containing polyoxometalates and H2O2 has applied the most succesful system in obtaining epoxide product with excellent yields for cis-cyclooctene in acetonitrile at 55 & DEG;C. Maximum epoxidation efficiency of 99 % was observed under optimized conditions for Ph4P[Cp*MoW5O18] (2c).

Automated summary

A method for the epoxidation of cis-cyclooctene using Lindqvist type POMs Cp*2MoxW6-xO17 (x=0, 2, 4, 6) and [Cp*MoxW6-xO18](-) as catalysts and 30% H2O2 as a green oxidant was studied. This catalytic system showed excellent yields for cis-cyclooctene in acetonitrile at 55 °C. The highest epoxidation efficiency of 99% was achieved under optimized conditions using Ph4P[Cp*MoW5O18] (2c).