AMIDOPHOSPHINEPHOSPHINITE COMPOUNDS

Novel chiral amidophosphine-phosphinite compounds, which are present in (R) and (S) form, of the general formula (see fig. I) wherein R1 signifies alkyl, cycloalkyl or aralkyl, R2 signifies alkyl, cycloalkyl, aralkyl or aryl and R3 and R4 each independently signify alkyl, cycloalkyl, aralkyl, aryl o...

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Bibliographic Details
Main Authors SCALONE, MICHELANGELO, SCHMID, RUDOLF, BURKART, WOLFGANG
Format Patent
LanguageEnglish
French
Published 10.09.1998
Edition6
Subjects
ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM
APPARATUS THEREFOR
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
GENERAL METHODS OF ORGANIC CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
THEIR RELEVANT APPARATUS
TRANSPORTING
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Summary:Novel chiral amidophosphine-phosphinite compounds, which are present in (R) and (S) form, of the general formula (see fig. I) wherein R1 signifies alkyl, cycloalkyl or aralkyl, R2 signifies alkyl, cycloalkyl, aralkyl or aryl and R3 and R4 each independently signify alkyl, cycloalkyl, aralkyl, aryl or heteroaryl or R3 and R4 together with the respective phosphorus atom signify a 9-dibenzophospholyl, 9-phosphabicyclo-¢3.3.1!nonyl or 9-phosphabicyclo¢4.2.1!nonyl group and * denotes a chiral centre, are manufactured by reacting a compound of the general formula R1C(OH)-CONHR2 (III) with a disubstituted chlorophosphane of the general formula R3R4PCl (IV) in a solvent and in the presence of a base. As ligands the amidophosphine-phosphinite compounds in accordance with the invention form complexes with Group VIII transition metals, especially with rhodium, iridium, ruthenium and palladium, and optionally with further ligands, and such complexes are likewise an object of the present invention; they can be used as catalysts for enantioselective reactions, especially for asymmetric hydrogenations, enantioselective hydrogen displacements and allylic substitution reactions.
Bibliography:Application Number: CA19982230770