Efficient Pseudo-enantiomeric Carbohydrate Olefin Ligands

[摘要]：Highly efficient pseudo-enantiomeric olefin ligands were designed from D-glucose and D-galactose. These ligands yield consistently excellent levels of enantipselectivity in Rh(l)-catalyzed 1,4-additions of aryl- and alkenylboronic acids to achiral enones and high diastereoselectivity with chiral substrates. Contrary to established olefin ligands, they are obtained enantiomerically pure via short syntheses without racemic resolution steps, making them a valuable addition to the arsenal of chiral ligands with olefinic donor sites.

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