75946-83-7Relevant articles and documents
Iridium catalysts with Chiral bicyclic pyridine-phosphane ligands for the asymmetric hydrogenation of olefins
Quan, Xu,Parihar, Vijay Singh,Bera, Milan,Andersson, Pher G.
, p. 140 - 146 (2014)
New bicyclic pyridine-phosphane ligands were prepared, and their iridium complexes were evaluated in asymmetric hydrogenation of trisubstituted olefins with non-coordinating and weakly coordinating substituents. The iridium catalysts showed high reactivity and enantioselectivity for both types of olefins. New pyridine-derived N,P-chelated iridium catalysts were prepared and evaluated in the asymmetric hydrogenation of trisubstituted olefins. High conversions and enantioselectivities were obtained. Copyright
Solvent-free transesterification in a ball-mill over alumina surface
Chatterjee, Tanmay,Saha, Debasree,Ranu, Brindaban C.
experimental part, p. 4142 - 4144 (2012/08/28)
An efficient procedure for transesterification has been developed in a ball-mill in the absence of any solvent, acid/base or metal catalyst. A variety of methyl, ethyl, allyl esters have been transesterified to higher benzyl and other esters in high yields by this procedure.
Asymmetric hydrogenation of tri-substituted alkenes with Ir-NHC-thiazole complexes
K?llstr?m, Klas,Andersson, Pher G.
, p. 7477 - 7480 (2007/10/03)
An efficient chiral N-heterocyclic carbene ligand for the Ir-catalyzed asymmetric hydrogenation of largely unfunctionalized tri-substituted olefins has been developed. The Ir-NHC-thiazole catalyst is able to reduce a large variety of substrates with excellent conversions and good enantioselectivities with ee's ranging from 34% to 90%, depending on the geometry around the double bond of the substrates.
