Chemistry of hydrocarbon compounds – Compound or reaction product mixture – Aromatic
Reexamination Certificate
2011-03-22
2011-03-22
Lu, Caixia (Department: 1765)
Chemistry of hydrocarbon compounds
Compound or reaction product mixture
Aromatic
C585S457000, C585S462000, C585S471000
Reexamination Certificate
active
07910783
ABSTRACT:
A process for preparing a chelating ligand of the formula (II) from a chelating ligand of the formula (I) via an sp2-sp2or sp2-sp3coupling reaction with an organometallic compound of the formula (III).wherein B is a bridging group that is bonded to L1and L2in formula (I) and to L3and L4in formula (II); L1is a substituted monocyclic or polycyclic ligand that comprises at least one chlorine, bromine, iodine, or sulfonate substituent, directly bonded to an sp2carbon atom of the ring structure of the ligand; L2is a monoanionic ligand; or L2may, independently, be defined as L1; L3is the same group as L1, but said at least one chlorine, bromine, iodine, or sulfonate substituent is replaced with a hydrocarbyl, substituted hydrocarbyl, halocarbyl, or substituted halocarbyl fragment; L4is the same group as L2, though, when L2is defined as L1, L4may be the same as L3or L1; R1is a hydrocarbyl, substituted hydrocarbyl, halocarbyl, or substituted halocarbyl; M1is an element of group 1, 2, 12, 13 or 14 of the Periodic Table of the Elements; each X2, if present, is selected independently from the group consisting of halogen atoms, the hydroxyl group, alkoxy groups, aryloxy groups, mesylate, tosylate and triflate; r is 1, 2 or 3, and t is 0, 1 or 2, where r+t corresponds to the oxidation number of M1.
REFERENCES:
patent: 4794096 (1988-12-01), Ewen
patent: 5789634 (1998-08-01), Sullivan et al.
patent: 3443087 (1986-05-01), None
patent: 0567970 (1993-03-01), None
patent: 0629632 (2000-04-01), None
patent: 1640377 (2006-03-01), None
patent: 98/40331 (1998-09-01), None
patent: 01/14388 (2001-03-01), None
patent: 03/084904 (2003-10-01), None
U.S. Appl. No. 11/300,002, filed Dec. 14, 2005, Voskoboynikov et al.
U.S. Appl. No. 11/300,032, filed Dec. 14, 2005, Voskoboynikov et al.
U.S. Appl. No. 11/300,054, filed Dec. 14, 2005, Voskoboynikov et al.
U.S. Appl. No. 11/300,240, filed Dec. 14, 2005, Voskoboynikov et al.
U.S. Appl. No. 11/302,798, filed Dec. 14, 2005, Voskoboynikov et al.
U.S. Appl. No. 11/302,821, filed Dec. 14, 2005, Voskoboynikov et al.
U.S. Appl. No. 11/302,997, filed Dec. 14, 2005, Voskoboynikov et al.
U.S. Appl. No. 11/302,998, filed Dec. 14, 2005, Voskoboynikov et al.
Wild et al., “Synthesis and Molecular Structures of Chiral ansa-Titanocene Derivatives with Bridged Tetrahydroindenyl Ligands,” J. Organomet. Chem. 1982, 232, 233-47.
“Selectivity in Propene Polymerization with Metallocene Catalysts”, Chem. Rev. 2000, vol. 100, No. 4, 1253-4345.
Panarello et al., “Use of Oxirane Ring-Opening Reactions for Synthesis of Ethylene-Bis(Indenyl)Ligands Containing Alkene Tethers,” Synlett 2005, 5, 797-800.
Panarello et al., “Selective Alkylation and Suzuki Coupling as an Efficient Strategy for Introducing Functional Anchors to the Ethylene-Bis(Indenyl)Ligand,” Tetrahedron Letters 2005, 46, 1353-1356.
Ishihara et al., “Design of Bronsted Acid Assisted Chiral Lewis Acid(BLA)Catalysts for Highly Enantioselective Diels-Alder Reactions,” Journal of the Amencan Chemical Society 1998, 120, 6920-6930.
Suzuki, “Recent Advances in the Cross-Coupling Reactions of Organoboron Derivatives with Organic Electrophiles, 1995-1998,” Journal of Organometallic Chemistry 1999, 576, 147-168.
Bailey et al., Effect of Solvent on the Lithium-Bromine Exchange of Aryl Bromides: Reactions ofn-Butyllithium and tert-Butyllithium with 1-Bromo-4-tert-butylbenzene at 0° C., J. Org. Chem., 2006, vol. 71, No. 7, pp. 2825-2828.
Parham et al., Preparation of Aroylbenzoic Acid. Reaction of Aryllithium Reagents with Phthalic Anhydride1, J. Org. Chem., vol. 41, No. 7, pp. 1268-1269, 1976.
Jones et al., Methods of Preparation of Organometallic Compounds, Chemical Review, 1954, vol. 54, No. 5, pp. 835-890.
Canich Jo Ann M.
Coker Catalina L.
Lygin Alexander V.
Nikulin Mikhail V.
Ryabov Alexey N.
ExxonMobil Chemical Patents Inc.
Lu Caixia
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