Chemistry of hydrocarbon compounds – Unsaturated compound synthesis – By alkyl transfer – e.g. – disproportionation – etc.
Reexamination Certificate
2005-07-01
2009-12-22
Bullock, In Suk (Department: 1797)
Chemistry of hydrocarbon compounds
Unsaturated compound synthesis
By alkyl transfer, e.g., disproportionation, etc.
C585S643000
Reexamination Certificate
active
07635794
ABSTRACT:
The invention relates to a method for metathesis of one or several reagents comprising a linear or branched hydrocarbon chain containing a double olefinic bond Csp2═Csp2consisting in reacting said reagent or reagents with a supported metal compound comprising an aluminum oxide-based support to which a tungsten hydride is grafted. Typically, each said reagent or reagents comprises from 2 to 30 carbon atoms. The reagent can be embodied in the form of olefin. The inventive method can be used, for example for producing propylene from ethylene and butane.
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Levisalles et al, “Etudes sur le mecanisme de la metathese des olefins i”, 1980, pp. 195-207, vol. 192, No. 2, J. Organometallic Chemistry, The Netherlands.
Wengrovius et al, “Multiple metal-carbon bonds. 25. Preparation and structure of tungsten neopentylidene hydride, neopentylidene carbonyl, and neopentylidene ethylene complexes”, 1982, p. 1739-1740, vol. 104, No. 6, Journal of the American Chemical Society.
Basset Jean-Marie
Coperet Christophe
Le Roux Erwan
Taoufik Mostafa
Thivolle-Cazat Jean
Bullock In Suk
CPE Lyon Formation Continue ET Recherche-CPE Lyon FCR
Schulman B. Aaron
Stites & Harbison PLLC
Wright Terry L.
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