Bisphosphines as bidentate ligands

Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C544S337000, C548S112000, C552S294000, C556S019000

Reexamination Certificate

active

11609606

ABSTRACT:
The present invention relates to ligands of the general formula (I).In addition, a process for the production thereof and the use thereof are demonstrated.

REFERENCES:
patent: 5171892 (1992-12-01), Burk
patent: 6476246 (2002-11-01), Monsees et al.
patent: 6492544 (2002-12-01), Krimmer et al.
patent: 6573389 (2003-06-01), Bosch et al.
patent: 2005/0209455 (2005-09-01), Boerner et al.
patent: 2007/0123733 (2007-05-01), Boerner et al.
patent: 2007/0149781 (2007-06-01), Riermeier et al.
patent: WO 03/031456 (2003-04-01), None
Becher et al., Diphenyl(trimethylsilyl)phosphine as a reagent for the preparation of acylphosphides and phosphino derivatives of dicarboxylic acids and squaric acid, respectively, Chemische Berichte (1973), 106(1), 177-87, (ABSTRACT).
Becher et al., Diphenyl(trimethylsilyl)phosphine as a reagent for the preparation of acylphosphides and phosphino derivatives of dicarboxylic acids and squaric acid, respectively, Chemische Berichte (1973), 106(1), 177-87.
Holz et al., Synthesis of a New Class of Functionalized Chiral Bisphospholane Ligands and the Application in Enantioselective Hydrogenations, J. Org. Chem., 63 (22), 8031-8034, 1998.
Becher et al. Diphenylphosphino derivatives of maleic and fumaric acid dialkyl esters: formation, properties, crystal and molecular structures, Monatshefte fuer Chemie (1978), 109(5), 1023-36.
Becher et al. Nickel(II) and palladium(II) complexes of 2,3-bis(diphenylphosphino)maleic anhydride. Preparation, properties, and reactions with methanol, Chemische Berichte (1977), 110(1), 315-21.
Becher et al., Diphenyl(trimethylsilyl)phosphine as a reagent for the preparation of acylphosphides and phosphino derivatives of dicarboxylic acids and squaric acid, respectively, Chemische Berichte (1973), 106(1), 177-187.
Holz et al., Synthesis of a New Class of Functionalized Chiral Bisphospholane Ligands and the Application in Enantioselective Hydrogenations, J. Org. Chem., 63 (22), 8031-8034, 1998.
U.S. Appl. No. 11/609,559, filed Dec. 12, 2006, Boerner et al.
U.S. Appl. No. 11/609,606, filed Dec. 12, 2006, Boerner et al.
U.S. Appl. No. 11/573,275, filed Feb. 6, 2007, Holz et al.
Kinting, Annegret et al. “Asymmetric Hydrogenation Catalyzed by Rhodium Complexes of 2,3-Bis(Dimenthylphosphino)Maleic Anhydride and 2,3-Bis(Dimenthylphosphino)-N-Phenylmaleimide”, Journal of Organometallic Chemistry, vol. 302, No. 2, pp. 259-264, XP002244123 1986.
Becher, Hermann J. et al. “Diphenylphosphinoderivate von Malein- und Fumarsaeureestern: Darstellung, Eigenschaften, Kristall- und Molekuelstrukturen”, Monatshefte fuer Chemie, vol. 109, No. 5, pp. 1023-1036, XP002244124, with English abstract 1978.
Berglund, Mats et al. “Chelating Phosphines on Silica Gel. I. Carbonyl Complexes as a Mean to Probe Chelating Ligand Sites”, Journal of Organometallic Chemistry, vol. 258, No. 2, pp. 195-204, XP002244125 1983.
Avey, Alfred et al. “A New Water-Soluble Phosphine for Use in Aqueous Organometallic Systems. Products from the Reactions of 2,3-Bis(diphenylphosphino)maleic Anhydride with Water and Oxygen”, Inorg. Chem., vol. 32, No. 2, pp. 233-236, XP001157596 1993.
Fenske, Dieter et al. “Darstellung und Eigenschaften von Derivaten des 2,3-Bis(diphenylphosphino)maleinsaeure-anhydrids als Beitrag zum Problem der Farbigkeit, Konjugationsbeeinflussung und Komplexbildung dieser Stoffklasse”, Chem. Ber., vol. 108, No. 6, pp. 2115-2123, XP002244186, with English abstract 1975.
Fenske, Dieter et al. “2,3-Bis(diphenylphosphino)maleinsaeureanhydrid und Diphenyl-phosphinoderivate des Cyclobutendions als Liganden in Metallcarbonylen”, Chem. Ber., vol. 107, No. 1, pp. 117-122, XP002244187, with English abstract 1974.
Holz, Jens et al. “Synthesis of a New Chiral Bisphospholane Ligand for the Rh(1)-Catalyzed Enantioselective Hydrogenation of Isomeric beta-Acylamido Acrylates”, J. Org. Chem, vol. 68, No. 5, pp. 1701-1707, XP002244188 2003.
Becher et al. “Radikalanionen des Bis (diphenylphosphino) maleinsaureanhydrid und seiner derivate Polarographische und ESR-Messungen Praparative Anwendungen” Zeitschrift fur anorganisch und allgemeine chemie 1981, vol. 475, pp. 27-34.
U.S. Appl. No. 11/908,343, filed Sep. 11, 2007, Holz et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Bisphosphines as bidentate ligands does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Bisphosphines as bidentate ligands, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bisphosphines as bidentate ligands will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3951145

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.