Aluminium Complexes with Hydroperoxides Promising Oxidation Catalysts

4 Aluminium Complexes with Hydroperoxides Promising Oxidation Catalysts 

Interestingly, Shul pin applied the same catalytic system to alkanes dissolved in acetonitrile and reported the successful formation of the related all l hydroperoxides. For instance, cyclo-octane hydroperoxide was formed in 31% yield after 32 h at 70 °C. As in the case of Schuchardt, the aluminium species is proposed to play a role in the formation of hydrojgrl radicals actually responsible for the oxidation.  

The reaction was run in ethanol with 30% hydrogen peroxide as oxidant instead of the 70% reported above and gave the corresponding esters and lactones almost quantitatively with an overall excellent selectivity (99%). However, the exact role of the Lewis acid in the ojygen transfer from hydrogen peroxide to the ketones via for example formation of species able to act as a peracid like Al(H20)5(H202) or Al(H20)g(OOH) needs some elucidation.  

Three-membered Ring Heterocycles and Carbon Dioxide The Formation of Cyclic Carbonates (Dioxolanones) and Oxazolidinones 

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