CATALYTIC ASYMMETRIC HYDROGENATIONS WITH POLYMER SUPPORTED CHIRAL PYRROLIDINEPHOSPHINE–RHODIUM COMPLEXES
نویسندگان
چکیده
منابع مشابه
Developing chiral phosphorus ligands for asymmetric hydrogenations*
Chiral rigid and electron-donating phosphocyclic phosphine ligands and modular atropisomeric biaryl phosphine ligands were designed and synthesized. The performance of these chiral ligands in the asymmetric hydrogenations of prochiral dehydroamino acid derivatives, enamides, imines, keto esters, and ketones has been demonstrated to be excellent.
متن کاملNew chiral phosphorus ligands with spirobiindane backbone for asymmetric hydrogenations*
Chiral spiro phosphorus ligands including monophosphoramidites and diphosphines, which contained 1,1'-spirobiindane as a backbone, were designed and synthesized. These spiro ligands were proven to be highly efficient for rhodiumand ruthenium-catalyzed asymmetric hydrogenations of prochiral olefins and ketones with excellent enantioselectivities.
متن کاملAsymmetric Hydrogenations
Actually this account is the story of the genesis of an invention[1]. The inventative process is not clearly understood, but one factor that seems to be important is to have a heavy infusion of naivety. That is why so frequently it is not the experts that do the inventing, but they are the ones who, that once the lead is established, come in and exploit the area. Our work is an excellent illust...
متن کاملEnantioselective hydrogenations with chiral titanocenes.
In this review article chiral titanocenes and their application for the enantioselective hydrogenations of different unsaturated compounds are discussed, with a special emphasis on the kinetics and the practicality of the developed systems. The nature of enantioselectivity and the hydrogenation mechanisms are reviewed as well. Catalyst immobilization and the different immobilization techniques ...
متن کاملCatalytic asymmetric reactions via p-allylpalladium complexes coordinated with chiral monophosphine ligands
Chiral monophosphines (MOPs), whose chirality is due to biaryl axial chirality, are prepared from enantiometrically pure 2,2%-dihydroxy-1,1%-binaphthyl and 3,3%-dihydroxy-4,4%-biphenanthryl. The representatives are 2-(diphenylphosphino)-2%-methoxy1,1%-binaphthyl (MeO–MOP and 3-(diphenylphosphino)-3%-methoxy-4,4%-biphenanthryl (MOP–phen). The palladium complexes coordinated with the MOP ligands ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Chemistry Letters
سال: 1978
ISSN: 0366-7022,1348-0715
DOI: 10.1246/cl.1978.905