Organic compounds -- part of the class 532-570 series – Organic compounds – Nitriles
Reexamination Certificate
2006-07-25
2006-07-25
Richter, Johann (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Nitriles
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.
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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.
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Beller Matthias
Junge Kathrin
Monsees Axel
Riermeier Thomas
Trauthwein Harald
Degussa - AG
Nwaonicha Chukwuma
Richter Johann
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