Organic compounds -- part of the class 532-570 series – Organic compounds – Halogen containing
Reexamination Certificate
2007-11-27
2007-11-27
Eyler, Yvonne (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Halogen containing
Reexamination Certificate
active
11726449
ABSTRACT:
Hexafluoroisobutylene and its higher homologs are easily reacted with SO3to give fluorosulfates of the formula CH2═C(R)CF2OSO2F, wherein R is a linear branched or cyclic fluoroalkyl group comprised of 1 to 10 carbon atoms and may contain ether oxygen. These compounds react under mild conditions with many nucleophiles to give CH2═C(R)CF2X, where X is derived from the nucleophile. This reaction provides a route to many substituted hexafluoroisobutylenes, which copolymerize easily with other fluoro- and hydrocarbon monomers such as vinylidene fluoride and ethylene.
REFERENCES:
patent: 2352554 (1944-06-01), England
patent: 3706723 (1972-12-01), Chandrasekaran et al.
patent: 4131740 (1978-12-01), England
patent: 4235804 (1980-11-01), Krespan
patent: 6140436 (2000-10-01), Doyle et al.
patent: 2003/0013816 (2003-01-01), Bekiarian et al.
patent: 0 121 073 (1987-07-01), None
patent: 0 728 776 (1998-10-01), None
patent: 1 148 041 (2001-10-01), None
patent: 1 219 063 (1971-01-01), None
patent: WO 00/55130 (2000-09-01), None
patent: WO 01/37043 (2001-05-01), None
patent: WO 02/093261 (2001-11-01), None
patent: WO 2002093261 (2002-11-01), None
March, Jerry, Advanced Organic Chemistry, 4th Edition, Wiley, New York, 1992, p. 205.
Petrov, Journal of Organic Chemistry, 1998, 63, pp. 2988-2992.
Knunyant, I. L., Editor, “Encylclopedia of Chemistry”, vol. 1, pp. 994-995, Scientific Publishers, Moscow, 1998.
Zefirow, N. S., Editor, “Encyclopedia of Chemistry”, vol. 5, pp. 401-402, Scientific Publishers, Moscow, 1999.
Cherstkov Victor Filippovich
Delyagina Nina Ivanova
Petrov Viacheslav A.
Qiu Weiming
Resnick Paul R.
E.I. du Pont de Nemours and Company
Eyler Yvonne
Gale Kellette
LandOfFree
Fluorosulfates of hexafluoroisobutylene and its higher... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fluorosulfates of hexafluoroisobutylene and its higher..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fluorosulfates of hexafluoroisobutylene and its higher... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3842646