Enantiodifferentiation of olefinic groups in cis-1,2-divinylcyclohexane

Chirality transfer from asymmetric ligands to the diene in ( η 4 - cis -1,2-divinylcyclohexane) rhodium complexes has been observed, leading to a slight excess of one of the two enantiomeric chair conformations of the cyclohexane ring. The importance of this phenomenon for the palladium-catalyzed oxidative cyclization of ( cis -1,22-divinylcyclohexane) using chiral carboxylates as nucleophiles is discussed.