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Preparation of hydroperoxides by autoxidation

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TLDR
In this article, the selectivity for organic hydroperoxides can be substantially increased by using a phosphate compound of Li, Na, Mg, Ca, Sr, Fe, Cu, U or B.
Abstract
In autoxidation of tertiary, aryl or cycloalkanes the selectivity for organic hydroperoxides can be substantially increased by using a phosphate compound of Li, Na, Mg, Ca, Sr, Fe, Cu, U or B. For example an autoxidation of isopentane with 0.05 wt. % boron phosphate at 9.9 mole % conversion gave selectivities of t-amyl hydroperoxides -- 75.0 mole %, acetone -- 18.3 mole % and t-amyl alcohol -- 1.5 mole %. The same reaction without the phosphate at 10.0 mole % conversion gave selectivities of t-amyl hydroperoxide -- 56.8 mole %, acetone -- 31.2 mole % and t-amyl alcohol -- 4.8 mole %.

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