The stereoselectivity of the platinum metals in the catalytic hydrogenation of 1,2- and 1,6-dimethylcyclohexene, 1-methyl-2-methylenecyclohexane and 6-ethoxy-1-methylcyclohexene has been studied. The formation of trans isomer increased in the order Ir < Os < Pt,Ru,Rh << Pd. This order in stereoselectivity has been related to the olefin isomerization activities of the metals.
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Nishimura et al. (1973) studied this question.
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