Organic compounds -- part of the class 532-570 series – Organic compounds – Nitrogen attached directly or indirectly to the purine ring...
Reexamination Certificate
2008-07-24
2011-12-13
Wilson, James O. (Department: 1624)
Organic compounds -- part of the class 532-570 series
Organic compounds
Nitrogen attached directly or indirectly to the purine ring...
Reexamination Certificate
active
08076480
ABSTRACT:
Disclosed is a process of preparing an optically active allyl compound, e.g., as represented by formula (III):comprising asymmetrically coupling an allyl compound with an organic nucleophilic compound in the presence of a catalyst. The catalyst is preferably a transition metal complex compound having a phosphine ligand. The phosphine ligand is preferably a 2,3-bis(dialkylphosphino)pyrazine derivative. The pyrazine derivative is preferably a quinoxaline derivative. The transition metal is preferably palladium.
REFERENCES:
patent: 2007/0021610 (2007-01-01), Imamoto et al.
patent: 2007/0066825 (2007-03-01), Scholz et al.
patent: 1438227 (2003-08-01), None
patent: 2007-056007 (2007-03-01), None
Great Britain Office Action dated Dec. 19, 2008, issued in corresponding Great Britain Patent Application No. GB0813271.4.
Tsarev, Vasily N. et al.; “Novel Highly Efficient P-Chiral Ferrocenylimino Diamidophosphite Ligands for Pd-Catalysed Asymmetric Allylation”; European Journal of Organic Chemistry, vol. 10, pp. 2097-2105, 2005.
Nakano, Hiroto et al.; “Polymer-supported chiral phosphinooxazolidine ligands for palladium-catalyzed asymmetric allylic alkylations and Diels-Alder reactions”; Tetrahedron: Asymmetry, vol. 16, pp. 2133-2140, 2005.
Braga, Antonio L. et al.; “New Simple Chiral Phosphine Oxazolidine Ligands: Easy Synthesis and Application in the Palladium-Catalyzed Asymmetric Allylic Alkylation”; Synlett, vol. 8, pp. 1331-1333, 2005.
Chelucci, Giogio et al.; “Chiral 5-(diphenylphosphanyl)-1,2,3,4-tetrahydroacridines: new N,P-ligands for asymmetric catalysis”; Tetrahedron Letters, vol. 46, pp. 3493-3496, 2005.
End, Nicole et al.; “Het PHOX: a new class of easily prepared modular chiral ligands”; Tetrahedron Asymmetry, vol. 15, pp. 2235-2239, 2004.
Germany Office Action dated Feb. 11, 2010, issued in corresponding Germany Patent Application No. 102008033164.3.
Imamoto, Tsuneo et al.; “Highly enantioselective hydrosilylation of simple ketones catalyzed by rhodium complexes of P-chiral diphosphine ligands bearing tert-butylmethylphosphino groups”; Tetraedron: Asymmetry, vol. 17, 2006, pp. 560-565.
Trost, Barry M. et al., “Asymmetric Transition-Metal-Catalyzed Allylic Alkylations: Applications in Total Synthesis” Chem Rev, 103, pp. 2921-2943, 2003.
Trost, Barry M. et al. “Asymmetric Transition-Metal-Catalyzed Allylic Alkylations” Chem Rev, 96, pp. 395-422, 1996.
Imamoto Tsuneo
Koide Aya
Nishimura Miwako
Yoshida Kazuhiro
McDowell Brian
National University Corporation Chiba University
Nippon Chemical Industrial Co. Ltd.
Westerman Hattori Daniels & Adrian LLP
Wilson James O.
LandOfFree
Process of preparing optically active allyl compound does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process of preparing optically active allyl compound, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process of preparing optically active allyl compound will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4304045