Process for the preparation of hydroxybiarylphosphines and novel

Details Process for the preparation of hydroxybiarylphosphines and novel Process for the preparation of hydroxybiarylphosphines and novel

1996-06-11

1998-08-04

Geist, Gary

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

Organic compounds

Phosphorus containing

568 17, C07F 952

Patent

active

057896232

ABSTRACT:
The present invention relates to a hydroxybiarylphosphines of the formula ##STR1## in which Ar-Ar is biphenyl, 1-phenyinaphthyl or 1,1'-binaphthyl, R.sup.1 and R.sup.2 are identical or different and are F or alkoxy having in each case 1 to 8 carbon atoms or are substituted or unsubstituted aryl, a and b are identical or different and are an integer from 0 to 4, in which R.sup.3 and R.sup.4 are identical or different and are alkyl having 1 to 8 carbon atoms, cycloalkyl having 4 to 10 carbon atoms, alkaryl having 7 to 9 carbon atoms, Ar.sup.3 --(R.sup.5).sub.n, in which A.sup.3 is an aryl radical having 6 to 10 carbon atoms, R.sup.5 is CF.sub.3, dialkylamino having a total of 2 to 8 carbon atoms or --CH.sub.2 N(alkyl).sub.2 having 1 to 3 carbon atoms per alkyl and n is an integer from 0 to 5, or --R.sup.3 --R.sup.4 -- forms a chain of 3 to 5 members to which one or two aromatic rings or ring systems having 6 to 10 carbon atoms are optionally fused together with the P atom, forms a ring having 4 to 6 members, with the proviso that Ar.sup.3 --(R.sup.5).sub.n is not phenyl or a phenyl substituted by halogen, alkyl or alkoxy each having 1 to 8 carbon atoms, if Ar-Ar is bipohenyl or 1,1'-binaphthyl and a.dbd.b.dbd.0 and R.sup.3 and R.sup.4 are identical in each case.

REFERENCES:
patent: 5523437 (1996-06-01), Hayashi
patent: 5530150 (1996-06-01), Takaya
Bardella, F., et al, Tetrahedron Letters 31:6231-6234 (1990).
Uozumi, Y., et al, J. Org. Chem. 58:1945-1948 (1993).
CA:123:198277, Abst of EP614870, "Process and chiral rhodium hydroformylation catalysts for preparing optically active aldehydes", Takaya, Sep. 1994.
CA:121:9662, Abst of "Synthesis of new chiral phosphineophosphite etc", Tetrahedron Lett 35(13) 2023-6, Higashizima, 1994.
CA:119:180104, Abst of "Highly enantioselective hydroformylationof olefins catalyzed by new phosphine phosphite-rhodium I complexes", J Am Chem Soc. 115(15) 7033-4, Sakai, 1993.
E. A. Chernyshev et al, "Journal of General Chemistry of the USSR", Organophosphorus Heterocyclic Compounds, III. Synthesis and Reactions of

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