Catalysts

Details Catalysts Catalysts

2010-01-29

2011-10-18

Kosack, Joseph (Department: 1626)

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

Organic compounds

Amino nitrogen containing

C548S101000, C556S019000

Reexamination Certificate

active

08039675

ABSTRACT:
Catalysts suitable for asymmetric hydrogenation reactions are described comprising the reaction product of a group 8 transition metal compound, a chiral phosphine and a chiral diamine of formula (I)in which R1, R2, R3and R4are independently hydrogen, a saturated or unsaturated alkyl or cycloalkyl group, an aryl group or a urethane or sulphonyl group and R5, R6, R7and R8are independently hydrogen, a saturated or unsaturated alkyl or cycloalkyl group, or an aryl group, at least one of R1, R2, R3and R4is hydrogen and A is a linking group comprising one or two substituted or unsubstituted carbon atoms.

REFERENCES:
patent: 6720439 (2004-04-01), Ohkuma et al.
patent: 2002/0095056 (2002-07-01), Cobley et al.
patent: 2003/0045727 (2003-03-01), Nakano et al.
patent: 0 718 265 (2000-08-01), None
patent: 1 134 226 (2001-09-01), None
patent: 1 146 037 (2001-10-01), None
patent: 1 323 724 (2003-07-01), None
patent: 1 134 226 (2007-01-01), None
patent: 11-189558 (1999-07-01), None
patent: 2002-284790 (2002-10-01), None
patent: 2003-104993 (2003-04-01), None
patent: WO-99/24410 (1999-05-01), None
patent: WO-01/58843 (2001-08-01), None
patent: WO-01/74829 (2001-10-01), None
patent: 02055477 (2002-07-01), None
patent: WO-03/048173 (2003-06-01), None
patent: 2004007506 (2004-01-01), None
Ekkhard Lindner et al., “Supported organometallic complexes Part XXXV. Synthesis, characterization, and catalytic application of a new family of diamine(diphosphine)ruthenium(II) complexes,”Journal of Organometallic Chemistry, vol. 665 (2003), pp. 176-185.
Takeshi Ohkuma et al., “trans-RuH(η1-BH4)(binap)(1,2-diamine): A Catalyst for Asymmetric Hydrogenation of Simple Ketones under Base-Free Conditions,”J. Am. Chem. Soc., vol. 124, No. 23, 2002, pp. 6508-6509.
Janine Cossy et al., “Ruthenium-catalyzed asymmetric reduction of 1,3-diketones using transfer hydrogenation,”Tetrahedron Letters, vol. 42 (2001), pp. 5005-5007.
Dendukuri Nagamani et al., “Pyrrolidyl Polyamines: Branched, Chiral Polyamine Analogues That Stabilize DNA Duplexes and Triplexes,”Organic Letters, 2001, vol. 3, No. 1, pp. 103-106.
Ching-Wen Lin et al., “A highly efficient and stereospecific borane reduction of spiro[4.4]nonane-1,6-dione catalyzed by a chiral oxazaborolidine,”Tetrahedron Letters, vol. 41 (2000), pp. 4425-4429.
Jacqueline S. Barlow et al., “New building blocks for efficient and highly diastereoselective polyol production—synthesis and utility of (R′,R′,S,S) and (S′,S′,R,R)-2,3-butane diacetal protected butane tetrol derivatives,”J. Chem. Soc., Perkin Trans. 1, 1999, pp. 1627-1629.
George H. P. Roos et al., “Synthesis of novel C2-symmetric ligands based on (R,R)- and (S,S)- diphenyl-1,3-propanediol,”Tetrahedron: Asymmetry, vol. 10 (1999), pp. 991-1000.
Takeshi Ohkuma et al., “BINAP/1,4-Diamine—Ruthenium(II) Complexes for Efficient Asymmetric Hydrogenation of 1-Tetralones and Analogues,”Organic Letters, vol. 6, No. 16, 2004, pp. 2681-2683.

Affiliated with

Also associated with

Rating

Catalysts does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4262523