Tetrasulfonated diphosphine compounds and metal complexes thereo

Details Tetrasulfonated diphosphine compounds and metal complexes thereo Tetrasulfonated diphosphine compounds and metal complexes thereo

1994-12-02

1996-07-16

Chan, Nicky

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

Organic compounds

Heavy metal containing

562 35, C07F 928, C07F 1500

Patent

active

055368581

ABSTRACT:
The invention is concerned with novel water-soluble racemic or optically active compounds of formulae ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 independently signify lower alkyl or lower alkoxy;

REFERENCES:
patent: 5274146 (1993-12-01), Ishizaki et al.
patent: 5274183 (1993-12-01), Herrman et al.
patent: 5324861 (1994-06-01), Ishizaki et al.
patent: 5347045 (1994-09-01), Hermann et al.
Wan, et al, Asymmetric Hydrogenation in Water by a Rhodium Complex of Sulfonated 2,2'-Bis(diphenylphosphine)-1,1'-binaphthyl (binap), J. Chem. Soc. Commun, pp. 1262-1264 (1993).
Kalck, et al, Use of Water-Soluble Ligands in Homogeneous Catalysis, Advances In Organometallic Chemistry, vol. 34 pp. 219-285, (1992).
Schmid, et al, Asymmetric Hydrogenation In Process Research And Development Of Pharmaceuticals, Vitamins And Fine Chemicals, Presentation held at International Symphosium on Organic Synthesis (9th Nozaki Conference), Kyoto, JP, Jun. 3-4, 1994.
Ostsuka Symposium "New Aspect Of Organic Chemistry", Tokushima, JP, Jun. 6-7, 1994; this presentation will also be held at the Chiral Europe '94-Symposium, Nice France, Sep. 19-20, 1994.
Broger, et al, "Synthesis Of A Water-Soluble Atropisomeric Diphosphine Ligand And Its Evaluation In Asymmetric Hydrogenation" poster presentation at NATO Advanced Research Workshop On Aqueous Organometallic Chemistry And Catalysis, Debrecen, Hungary, Aug. 29 to Sep. 1, 1994.

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