摘要：

Remarkably high ee values in the asymmetric dihydroxylation reaction (AD) can be achieved with the pseudo-enantiomeric ligand pair (DHQD)2AQN and (DHQ)2AQN. These new ligands are superior for AD reactions of most olefins with aliphatic substituents and show exceptionally high enantioselectivity with olefins having heteroatoms in the allylic position [Eq. (a)]. DHQD = dihydroquinidinyl.

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