Organic compounds -- part of the class 532-570 series – Organic compounds – Sulfonic acids or salts thereof
Reexamination Certificate
2009-05-27
2010-11-09
Powers, Fiona T (Department: 1626)
Organic compounds -- part of the class 532-570 series
Organic compounds
Sulfonic acids or salts thereof
Reexamination Certificate
active
07829739
ABSTRACT:
The present invention relates to compositions of matter that are ionic liquids, the compositions comprising any of eleven cations combined with any of three fluorinated sulfonated anions. Compositions of the invention should be useful as solvents and, perhaps, as catalysts for many reactions, including aromatic electrophilic substitution, nitration, acylation, esterification, etherification, oligomerization, transesterification, isomerization and hydration.
REFERENCES:
patent: 3555080 (1971-01-01), Resnick
patent: 5827602 (1998-10-01), Koch et al.
patent: 6194497 (2001-02-01), Willems et al.
patent: 6720459 (2004-04-01), Sunkara et al.
patent: 7544813 (2009-06-01), Harmer et al.
patent: 2006/0276670 (2006-12-01), Junk et al.
patent: 0897950 (1999-02-01), None
patent: 03028882 (2003-04-01), None
patent: 2006084262 (2006-08-01), None
Rogers, Robin D. and Seddon, Kenneth R., Ionic Liquids-Solvents of the Future?, Science, vol. 302, Oct. 31, 2003.
Wasserscheid, Peter et al, Hydrogensulfate and Tetrakis(Hydrogensulfato)Borate Ionic Liquids: Synthesis and Catalytic Application in Highly Bronsted-Acidic Systems for Friedel-Crafts Alkylation, Green Chemistry, 2002, 4, pp. 134-138.
Merrigan, Travis L. et al, New Fluorous Ionic Liquids Function As Surfactants in Conventional Room-Temperature Ionic Liquids, Chem. Commun., 2000, pp. 2051-2052.
Rudyuk, Vitalij V. et al, N-Polyfluoroethyl and N-2-Chlorodifluorovinyl Derivatives of Azoles, Journal of Fluorine Chemistry 125 (2004), pp. 1465-1471.
Wasserscheid & Keim, Ionic Liquids-New “Solutions” for Transition Metal Catalysis, Angew. Chem. Int. Ed. 2000, 39, pp. 3772-3789.
Sheldon, Roger, Catalytic Reactions in Ionic Liquids, Chem. Commun, 2001, pp. 2399-2407.
Koshar, R. et al, Preparation of B-H-Perfluoro Alkanesulfonic Acids, J. Am. Chem. Soc., vol. 75, 1953, pp. 4595-4596.
Huang, W. et al., “Perfluoro and Polyfluorosulfonic Acids”, Database CA [Online] Chemical Abstracts Service, Columbus, Ohio, XP002412172, Retrieved From STN Database Accession No. 1983:34194 Abstract and Huaxue Xuebau, vol. 40, No. 9, 1982, pp. 821-827.
Coffman D. D. et al., “Addition Reactions of Tetrafluoroethylene” Journal of Organic Chemistry, American Chemical Society, Easton, US, No. 14, 1949, pp. 747-753.
Shiflett, Mark B., et al., “Solubility and Diffusivity of Difluoromethane in Room-Tempeature Ionic Liquids”, Database CA [Online] Chemical, Columbus Ohio, XP002412173 Retrieved From STN Database Accession No. 2006:75448 Abstract & Journal of Chem & Engg Data, 51(2), 483-495, ISSN: 0021-9568, 2006.
Shiflett, Mark B., et al., “Solubility and Diffusivity of 1,1,2,2-Tetrafluoroethane in Room-Temperature Ionic Liquids”, Database CA [Online] Chemical, Columbus Ohio, XP002412174 Retrieved From STN Database Accession No. 2006:253906 Abstract & Fluid Phase Equilibria vol. 242 No. 2, 2006, pp. 220-232.
Liu, Jintao et al, 3-Oxa Perfluorononyl Fluorocarbon Surfact, its Synthesis and Application, Database CA [Online] Columbus, OH, XP002412175 Retrieved From STN Database Accession No. 2005:414483, Abstract & CN 1 431 037 CN (Shanghai Inst. of Org. Chem., Chinese Academy of Sciences) Jul. 23, 2003.
Del Sestro, R. E. et al, “Tetraalkylphosphonium-Based Ionic Liquids”, Journal of Organometallic Chemistry, Elsevier-Sequoia S.A., Laussanne, CH, vol. 690, No. 10, May 16, 2005, pp. 2536-2542.
Harmer Mark Andrew
Junk Christopher P.
Vickery Jemma
E.I. du Pont de Nemours and Company
Powers Fiona T
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