Metallic catalysts for chemo-, regio- and stereoselective...

Details Metallic catalysts for chemo-, regio- and stereoselective... Metallic catalysts for chemo-, regio- and stereoselective...

2007-12-11

2007-12-11

Nazario-Gonzalez, Porfirio (Department: 1621)

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Organic compound containing

C548S402000, C548S412000, C549S003000, C549S006000

Reexamination Certificate

active

10506305

ABSTRACT:
Metallic catalysts of the general formula (I) and their precursors, suitable for chemo- regio- and stereoselective reactions, derived from ortho-bis-(1-phospholanyl)-heteroarenes. The new catalysts are characterized by the presence of two homo-morphic phospholanic rings set in adjacent positions of an aromatic pentatomic heterocycle

REFERENCES:
patent: 5329015 (1994-07-01), Burk
patent: WO 99/24444 (1999-05-01), None
patent: WO 03/031456 (2003-04-01), None
patent: WO 03/074160 (2003-09-01), None
Fernandez et al., “Rationally Designed Improvement of the Bis(phospholano)ethane Ligand for Asymmetric Hydrogenation Leads to Reappraisal of the Factors Governing the Enantioselectivity of Duphos Catalysts,” Chem. Commun. 17:1663-1664, 2000.

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