Abstract

1. The behavior of gem-dimethylcyclopentane in a discontinuous system at 200–340°C in the presence of Pt, Rh, Rr, Ir, Os, and Pd deposited on active carbon is similar to the behavior of monosubstituted cyclopentanes under the same conditions. Its hydrogenolysis on Pt/C takes place according to the sextet-doublet mechanism, and on Rh, Ru, Os, and Ir catalysts according to the rib doublet scheme. 2. The transformation of gem-dimethylcyclohexane is also determined by the nature of the metal. On Pt/C the main route appears to lead to aromatization with the resulting formation of toluene and benzene; on Rh and Ru catalysts, the hydrogenolysis leads to the formation of C1–C5 alkanes.

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