Bis(ortho-diarylphosphinophenyl)-tetrahydro-bi(1,3-oxazole) and

Details Bis(ortho-diarylphosphinophenyl)-tetrahydro-bi(1,3-oxazole) and Bis(ortho-diarylphosphinophenyl)-tetrahydro-bi(1,3-oxazole) and

1998-12-09

1999-11-30

McKane, Joseph K.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D26308, C07D26310, C07D41304

Patent

active

059945567

ABSTRACT:
The present invention relates to optically pure bis(o-diarylphosphinophenyl)-tetrahydro-bi(1,3-oxazole) compounds represented by the formula (I) and a preparation method thereof. Bis(o-diarylphosphinophenyl)-tetrahydro-bi(1,3-oxazole) compounds of the present invention include (4S,4'S)-2,2'-bis(o-diarylphosphinophenyl)-4,4',5,5'-tetrahydro-4,4'-bi(1, 3-oxazole) represented by the formula (Ia) and its enantiomer, (4R,4'R)-2,2'-bis(o-diarylphosphinophenyl)-4,4',5,5'-tetrahydro-4,4'-bi(1, 3-oxazole) represented by the formula. The compounds of the present invention can be utilized in asymmetric hydrosilylation, hydrogenation, cyclopropylation and alkylation reactions.

REFERENCES:
SYNLETT (Apr. 1991, pp. 257-259) C2-Symmetric Bioxazolines and Bithiazolines as New Chiral Ligands for Metal Icon Catalyzed Asymmetric Syntheses: Asymmetric Hydrosilylation.
Otganometallics (1991), 10, 500-508.
Journal of Organometallic Chemistry, (1988) pp. 413-424.
Tetrahedron: Asymmetry, vol. 8 No. 17, pp. 2927-2932, (1997).
Organometallics (1989), 5, pp. 846-848.
Tetrahedron: Asymmetry, vol. 6. No. 3, pp. 653-656, (1995).

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