Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Reexamination Certificate
2006-05-04
2009-11-24
Keys, Rosalynd (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
C568S673000, C568S674000, C549S430000, C549S455000, C585S612000
Reexamination Certificate
active
07622616
ABSTRACT:
A process for obtaining vinyl compounds by dehalogenation of halofluorinated compounds having a linear, branched or cyclic structure, said halofluorinated compounds containing in the molecule at least one group:wherein Y1and Y2, equal to or different from each other, are selected from Cl, Br, I;wherein the halofluorinated compounds are dehalogenated in the presence of a transition metal, or of transition metal couples, by operating in a biphasic system of solvents immiscible among each other, formed of a (per)fluorinated solvent and a dipolar aprotic or protic solvent (co-solvent), wherein the ratio moles co-solvent/equivalents of the halofluorinated compound ranges from 0.5 to 10, preferably from 0.5 to 5, still more preferably from 1 to 3.
REFERENCES:
patent: 3242218 (1966-03-01), Sianesi et al.
patent: 3715378 (1973-02-01), Resnick et al.
patent: 3810874 (1974-05-01), Mitsch et al.
patent: 4523039 (1985-06-01), Lagow et al.
patent: 4647413 (1987-03-01), Savu
patent: 5149842 (1992-09-01), Sianesi et al.
patent: 5225576 (1993-07-01), Navarrini et al.
patent: 5258110 (1993-11-01), Sianesi et al.
patent: 5449825 (1995-09-01), Ishibe et al.
patent: 5495028 (1996-02-01), Navarrini et al.
patent: 2001/0051753 (2001-12-01), Navarrini
patent: 2006/0252966 (2006-11-01), Wlassics et al.
patent: 0 148 482 (1985-07-01), None
patent: 0 239 123 (1987-09-01), None
patent: 0 340 740 (1989-11-01), None
patent: 0 633 257 (1995-01-01), None
patent: 1 247 791 (2002-10-01), None
patent: 1 333 020 (2003-08-01), None
patent: 1 388 531 (2004-02-01), None
patent: 1 454 940 (2004-09-01), None
patent: 1 104 482 (1968-02-01), None
patent: WO 90/03357 (1990-04-01), None
Navarrini W et al.; “New perfluorovinylethers through the bis(fluoroxy) difluoromethane (BDM)chemsitry”; Journal of Flourine Chemistry; vol. 125; No. 2, Feb. 2, 2004; pp. 189-197; XP004486522; ISSN: 0022-1139.
Houben-Weyl; Methods of Organic Chemistry; vol. E 10B2; 1999; Georg Thieme Verlag; Stuttgart; XP002441628; pp. 125-161.
Ameduri at al., “Synthesis and polymerization of fluorinated monomers bearing a reactive lateral group . . . ”, J. Fluorine Chem., vol. 35, pp. 167-172, 1998.
Morken at el., “Preparation β, β-Difluoro-α-trifluoromethyl)styrenes by Palladium-Catalyzed Coupling of Aryl Iodides with Pentafluoropropen 2-ylzinc Reagent”, J. Org. Chem., vol. 58, 1993, pp. 1167-1172.
Tortelli Vito
Wlassics Ivan
Arent & Fox LLP
Keys Rosalynd
Solvay Solexis S.p.A.
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