Chiral ligands, transition metal complexes thereof, and the...

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

Reexamination Certificate

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C562S009000, C564S016000, C568S012000

Reexamination Certificate

active

07081544

ABSTRACT:
The invention relates to novel chiral ligands of formula (I), the production thereof and the use of the same in catalytic reactions.

REFERENCES:
patent: 0686639 (1995-12-01), None
patent: WO 01/14299 (2001-03-01), None
Bitterer et al., PH-Functional Phosphines with 1,1′-Biphenyl-2,2′-bis(methylene) and 1,1′-Binaphthyl-2-2′-bis(methylene) Backbones, Inorg. Chem.; (Article); 1998; 37(25); 6408-6417.
Gladiali et al., Novel Atropisomeric Phosphorus Ligands: 4,5-Dihydro-3H-dinaphtho[2,1-c;1′,2′-e] Phosphepine Derivatves, Tetrahedron Asymmetry, 1994, 5 (4) 511-514.
Vedejs, E. et al: “Enantioselective Acylations Catalyzed by Chiral Phosphines” J. Org. Chem. (1996), 61(2), 430-1, XP002208471.
Gladiali, Serafino et al: “Novel atropisomeric phosphorus ligands: 4, 5-dihydro-3H-dinaphtho ′2, 1-c; 1′, 2′-elphosphepine derivatives” Tetrahedron: Asymmetry (1994), 5(4), 511-14, XP001093902 p. 512.
Stranne, Robert et al: “Synthesis and application of chiral P, N-ligands with pseudo-meso and pseudo-C2 symmetry” Organic Letters (2001), 3(16), 2525-2528, XP002208472.
Bitterer, Frank et al: “PH-Functional Phosphines with 1,1′-Biphenyl-2,2′-bis(methylene) and 1,1′-Binaphthyl-2,2′-bis(methylene) Backbones” Inorganic Chemistry (1998), 37(25), 6408-6417, XP002208473.
Soulier, Eric et al: “Phosphane and bis(phosphane) ligands from phosphinic acids” European Journal of Organic Chemistry (2000), (20), 3497-3503, XP002208474.
Soulier, Eric et al: “A convenient access to new phosphine and diphosphine ligands form phosphinic acids” Tetrahedron Letters (1998), 39(24), 4291-4294, XP002208475.

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