Aromatisation of branched alkanes

Branched alkanes with less than 6 C atoms in their main chain also produce benzene. They must, however, undergo skeletal rearrange- 

One molecule fragmented on Pt produced 2.2 fragments,I i.e., just a slight methane excess. 

If the alkylating Ci unit is not radioactive, the molar radioactivity of the C7 product from the labelled feed should be 6/7 = 0.83, which is in good agreement with the result of Table 5. Comparing the results from hexane and inactive benzene,as well as the reverse mixture,indicates that alkylation of the ready aromatic ringl l as well as degradation of larger products (e.g., dimers) were less likely pathways. 

Dehydrogenation of cyclohexanol to phenol can start with the formation of cyclohexanone intermediate (the stable tautomer of cyclohexenone  

Comparing 10 metals of Group 8-10 (plus Re). revealed that Rh and Ir were also rather active catalysts of aromatisation, but only in hydrogen excess. Cyclohexanone was the preferred product on Os, Co, Fe, Ru and Re. Concerning the formation of hydrocarbons, reaction (3) does not occur. Hydrocarbons are formed either by dehydrogenation to cyclohexene. 

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