Chiral diphosphine ligands based on camphor: synthesis and applications in asymmetric hydrogenations
作者:Renat Kadyrov、Ilyas Z. Ilaldinov、Juan Almena、Axel Monsees、Thomas H. Riermeier
DOI:10.1016/j.tetlet.2005.08.103
日期:2005.10
The synthesis of a novel class of atropisomer chiral diphosphineligands with a bornene framework is described. The new ligands showed in Rh catalyzed asymmetric hydrogenation of α- and β-enamides very high ee’s (more than 99%).