Organic compounds -- part of the class 532-570 series – Organic compounds – Halogen containing
Reexamination Certificate
2006-07-04
2006-07-04
Richter, Johann (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Halogen containing
C570S123000, C570S170000
Reexamination Certificate
active
07071367
ABSTRACT:
The present invention provides a process for the preparation of trifluoromethyl iodide. The process includes the step of: contacting in a reactor a compound represented by the formula:in-line-formulae description="In-line Formulae" end="lead"?CF3—Win-line-formulae description="In-line Formulae" end="tail"?and a compound represented by the formula:in-line-formulae description="In-line Formulae" end="lead"?Z-Iin-line-formulae description="In-line Formulae" end="tail"?wherein W is selected from CF3, hydrogen and bromine; Z is selected from hydrogen, iodine and chlorine. The step of contacting is carried out, optionally in the presence of a catalyst and further optionally in the presence of air, at a temperature, pressure and for a length of time sufficient to produce the trifluoromethyl iodide.
REFERENCES:
patent: 4794200 (1988-12-01), Tordeux et al.
patent: 4922041 (1990-05-01), Naumann et al.
patent: 5892136 (1999-04-01), Nagasaki et al.
patent: 1805457 (1968-10-01), None
patent: 19751551 (1988-05-01), None
patent: 0266281 (1988-05-01), None
patent: 2794456 (1999-05-01), None
patent: 52068110 (1977-06-01), None
patent: 2262529 (1999-10-01), None
Naumann,Preparation and Properties of ZnBr(CF3)-2L—A Convenient Route for the preparation of CF3I, Journal of Fluorine Chemistry, 67 (1994) 91-93.
Abstract: Tordeux,Process for the preparation of trifluoromethyl iodide, Rhone-Poulenc Chimie SA.
Abstract: Lee,Synthesis of CF3I by direct iodiniation of CF3COOH on solid catalyst, Waste Research Team, Energy & Environment Department, Taejou S. Korea, 2002.
Abstract: Su,A simple, novel method for the preparation of trifluoromethyl iodide and diiododifluoromethane, Journal of the Chemical Society, 1992.
Abstract: Chiriac,Synthesis and purification of iodotrifluoromethane, bromotrifluoromethane, trifluoromethane-dl for laser isotope separation, Revistade Chimie, Bucharest, Romania, 1982.
Abstract: Nagasaki,Study on a novel catalytic reaction and its mechanism for CF3I synthesis, Research Laboratory, Tosoh F-Tech, Inc., Yamaguchi, Japan, 2004.
Dhooge,Low Environmental Impact, High Performance Foam Blowing Agents Based on Iodofluorocarbons, Environmental Technology and Education Center, Albuquerque, New Mexico.
Nagasaki,The Development of a Novel Catalytic Technology for CF3I Manufacture, Research Laboratory, Tosoh F-Tech, Inc., Yamaguchi, Japan.
Glass,Gas Phase Combustion Suppression of Various Fuels by CF3I,Environmental Technology and Education Center, Albuquerque, New Mexico, 1999.
Mukhopadhyay Sudip
Tung Hsueh Sung
Honeywell International , Inc.
Nwaonicha Chukwuma
Richter Johann
Szuch Colleen D.
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