Asymmetric catalysts prepared from optically active...

Details Asymmetric catalysts prepared from optically active... Asymmetric catalysts prepared from optically active...

2006-03-21

2006-03-21

Witherspoon, Sikarl A. (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

C568S454000, C568S568000, C568S015000, C502S155000, C502S213000

Reexamination Certificate

active

07015360

ABSTRACT:
This invention relates to asymmetric hydroformylation (hf) processes in which a prochiral or chiral compound is contacted in the presence of an optically active metal-ligand complex catalyst to produce an optically active aldehyde or product derived from an optically active aldehyde. The invention encompasses novel ligands and catalysts for use in such processes.

REFERENCES:
patent: 4268688 (1981-05-01), Tinker et al.
patent: 5491266 (1996-02-01), Babin et al.
Buisman et al. Chiral Cooperativity in Diastereomeric Diphosphite Ligands: Effects on the Rhodium-Catalyzed Enantioselective Hydroformylation of Styrene. Organometallics. 1997, vol. 16, p 2929-2939.

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