Ligand iron catalysts for selective hydrogenation

Details Ligand iron catalysts for selective hydrogenation Ligand iron catalysts for selective hydrogenation

2007-11-20

2010-11-16

Gonzalez, Porfirio Nazario (Department: 1621)

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

Organic compounds

Oxygen containing

C568S881000, C564S489000, C556S141000, C502S152000

Reexamination Certificate

active

07834224

ABSTRACT:
Disclosed are iron ligand catalysts for selective hydrogenation of aldehydes, ketones and imines. A catalyst such as dicarbonyl iron hydride hydroxycyclopentadiene) complex uses the OH on the five member ring and hydrogen linked to the iron to facilitate hydrogenation reactions, particularly in the presence of hydrogen gas.

REFERENCES:
J. Peters et al., X-ray Crystal Structure Of The Fe-Only Hydrogenase (Cpl) From Clostridium pasteurian To 1.8 Angstrom Resolution, 282 1853 et seq. (1998).
Y. Nicolet et al., Desulfovibrio Desulfuricans Iron Hydrogenase: The Structure Shows Unusual Coordination To An Active Site Fe Binuclear Center, 7 Structure 13-23 (1999).
H.-J. Fan et al., A Capable Bridging Ligand for Fe-Only Hydrogenase . . . , 123 J. Am. Chem. Soc. 3828-3829 (2001).
R. Noyori et al., Asymmetric Catalysis By Architectural and Functional Molecular Engineering . . . , 40 Angew. Chem. Int. Ed. 40-73 (2001).
T. Ikariya et al., Bifunctional Transition Melta-Based Molecular Catalysts For Asymmetric Syntheses, 4 Org. Biomol. Chem. 393-406 (2006).
Y. Shvo et al., A New Group Of Ruthenium Complexes: Structure And Catalysis, 108 J. Am. Chem. Soc. 7400-7402 (1986).
C. Casey et al., Hydrogen Transfer To Carbonyls And Imines . . . , 123 J. Am. Chem. Soc. 1090-1100 (2001).
J. Casey et al.,Isomerization And Deuterium Scrambling Evidence For A Change . . . , 127 J. Am. Chem. Soc. 1883-1894 (2005).
J. Casey et al., Reduction Of Imines By Hydroxycyclopentadienyl Ruthenium Hydride . . . , 127 J. Am. Chem. Soc. 14062-14071 (2005).
J. Casey et al., Stereochemistry Of Imine Reduction By A Hydroxycyclopentadienyl Ruthenium Hydride, 128 J. Am. Chem. Soc. 2286-2293 (2006).
See M. Schroeder et al., Pentacarbonyliron(O) Photocatalyzed Hydrogenation And Isomerization Of Olefins, 98 J. Am. Chem. Soc. 551-558 (1976).
S. Bart et al., Preparation And Molecular And Electronic Structures of Iron(O) Dinitrogen . . . , 126 J. Am. Chem. Soc. 13794-13807 (2004).
E. Daida et al., Considering Fell/IV Redox Processes As Mechanistically Relevant . . . , 43 J. C. Inorg. Chem. 7474-7485 (2004).
M. Radhi et al., Hydrogenation Of N-Benzylideneaniline With Molecular Hydrogen Using Iron Pentacarbonyl As Catalyst Precursor, 262 J. Organomet. Chem. 359-364 (1984).
H.-J. Knoelker et al., Demetalation Of Tricarbonyl(cyclopentadieone)iron Complexes . . . , 38 Angew. Chem. Int. Ed. 2064-2066 (1999).
C. Casey et al., Unexpected Formation Of The Isopropylamine Complex . . . , 21 Organometallics 1955-1959 (2002).
C. Casey et al., An Efficient And Chemoselective Iron Catalyst For The Hydrogenation Of Ketones, 5816-5817 (Apr. 17, 2007) (not prior art).
R. Bullock, An Iron Catalyst For Ketone Hydrogenations Under Mild Conditions, 2007 Angew. Chem. 03053 (9 pages) (2007) (not prior art).
Steven W. Singer, on pp. 232-239 of an appendix of his PhD thesis entitled “Formation And Reactions Of A Hydroxycyclopentadienyl Ruthenium Hydride: An Organometallic Complex Containing Electronically Coupled Acidic And Hydridic Hydrogens”, University Of Wisconsin (2002).

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