A Modular Furanoside Thioether-Phosphite/Phosphinite/ Phosphine Ligand Library for Asymmetric Iridium-Catalyzed Hydrogenation of Minimally Functionalized Olefins: Scope and Limitations
作者:Mercedes Coll、Oscar Pàmies、Montserrat Diéguez
DOI:10.1002/adsc.201200711
日期:2013.1.14
thioether‐phosphite/phosphinite/phosphine ligand library has been synthesized for the iridium‐catalyzed asymmetric hydrogenation of minimallyfunctionalizedolefins. These ligands can be prepared efficiently from easily accessible D‐(+)‐xylose. We found that their effectiveness at transferring the chiral information in the product can be tuned by correctly choosing the ligand components. Enantioselectivities were
Thioether-phosphite: new ligands for the highly enantioselective Ir-catalyzed hydrogenation of minimally functionalized olefins
作者:Mercedes Coll、Oscar Pàmies、Montserrat Diéguez
DOI:10.1039/c1cc13300d
日期:——
We have described the first successful application of non-N-donor heterodonor ligands—thioether-phosphite ligands—in the Ir-catalyzed hydrogenation of minimally functionalized olefins. Excellent enantioselectivities (ee's up to 99%) have been obtained for a range of substrates, including challenging terminal disubstituted substrates, under standard conditions.