Cyclohexanols solid support

The procedure is commendable for its sinq>licity, reduced toxicity (chromium in all its oxidation states is carcinogenic) and achieves good yields of ketones from alcohol, for example, octan-2-ol is oxidized into octan-2-one (92%), cyclohexanol into cyclohexanone (90%) and menthol into menthone (98%). Pyridinium chromate is also a well-known oxidant for allylic oxidations. As a silica gel supported reagent, this is turned into an efficient alcohol oxidant that will leave acid-labile functions unscathed. Another advantage of the reagent is the long shelf-life of more than a year. These solid-supported oxidants also greatly facilitate pr uct work-up, when compared with their solution counterparts. 

The goal here was to find new solid catalysts for cyclohexyl hydroperoxide (chhp) decomposition in cyclohexanol and cyclohexanone. The requirement list had foreseen a study on silica-supported metals of groups 4 and 5 and the need for a heterogeneous catalyst without metal Bxiviation. 

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