Process for synthesis of dialkoxyorganoboranes

Organic compounds -- part of the class 532-570 series – Organic compounds – Boron containing

Reexamination Certificate

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C568S001000

Reexamination Certificate

active

07858827

ABSTRACT:
The invention relates to a process for the synthesis of dialkoxyorganoboranes, in particular to a process for the synthesis of dialkoxyorganoboranes by an ester exchange reaction. Moreover, the invention relates to a process for the synthesis of organo-oxazaborolidine catalysts (organo-CBS) and of trialkylboroxins. Furthermore, the invention relates to methods of using dialkoxyorganoboranes for the preparation of organo-CBS catalysts and in Suzuki-type coupling reactions.

REFERENCES:
patent: 3027396 (1962-03-01), Willcockson et al.
patent: 3203928 (1965-08-01), Willcockson et al.
patent: 3375265 (1968-03-01), Fetterly et al.
patent: 3853941 (1974-12-01), Hough et al.
patent: 5264585 (1993-11-01), Blacklock et al.
patent: 5463131 (1995-10-01), Burkhardt
patent: WO-02/22623 (2002-03-01), None
Beckman, Jens et al., “Ring Strain in Boroxine Rings: Computational and Experimental Considerations”, Journal of Organometallic Chemistry, vol. 633, No. 1-2, pp. 149 to 156, 2001.
Dahlhoff, Wilhelm V., et al., “Boron Compounds. 45.16-Deoxy-O-Acyl-Alpha-L-Mannofuranoses Via O-Ethylboranediyl Derivatives”, J. Org. Chem., vol. 42, No. 19, pp. 3151 to 3157, 1977.
Brown, Herbert C., et al., “Organoboranes. 31. A Simple Preparation of Boronic Esters From Organolithium Reagents and Selected Trialkoxyboranes”, Organometallics, vol. 2, pp. 1316 to 1319, 1983.
Corey, Elias J., et al., “Reduction of Carbonyl Compounds With Chiral Oxazaborolidine Catalysts: A New Paradigm for Enantioselective Catalysis and a Powerful New Synthetic Method”, Angew. Chem. Int. Ed., vol. 37, pp. 1986 to 2012, 1998.
Miyaura, Norio et al., “Palladium-Catalyzed Cross-Coupling Reactions of Organoboron Compounds”, Chem. Rev., vol. 95, pp. 2457 to 2483, 1995.
Brown, Herbert C., et al., “Organoboranes. 30. Convenient Procedures for the Synthesis of Alkyl- and Alkenylboronic Acids and Esters”, Organometallics, vol. 2, pp. 1311 to 1316, 1983.
Dahlhoff, W. V., et al., “Selective Syntheses of the Methyl α-D-Furanosides of Lyxose and Mannose Using Ethyl(Dimethoxy) Borane”, Liebigs Ann. Chem., vol. 8, pp. 807 to 810, 1990.
Corey, E. J., et al., “A New Process for the Generation of 1,3,2-Oxazaborolidines, Catalysts for Enantioselective Synthesis”, Tetrahedron Letters, vol. 33, No. 29, pp. 4140 to 4144, 1992.
Chavant, P.Y., et al., “Preparation of Some Organo-Bis (Diisopropylamino) Boranes and Their Application to the Synthsis of Oxazaborolidines”, Journal of Organometallic Chemistry, vol. 455, pp. 37 to 46, 1993.

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