Prochiral 3-methyl-5-phenylpent-Zene has been isomerized in the presence of H,Ru,(CO),[( -)-DIOP],, both in the presence and in the absence of hydrogen. (S)-( + )-l-Phenyl-3-methylpent -1-ene was formed as the consequence of an enan- tioface differentiating process. ... In a previous paper we have reported that olefin isomerization is concurrent with its hydrogenation when using H4Ru4(C0)s[( -)-DIOP], [l]. Isomerization may ... In order to test whether an enantioface ...