Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters
Reexamination Certificate
2011-04-26
2011-04-26
Zucker, Paul A (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acid esters
C568S400000, C568S398000
Reexamination Certificate
active
07932418
ABSTRACT:
The present invention relates to a preparation of β-γ ene carboxylic or ketone derivatives, which may also have particular requirement on the configuration of the carbon-carbon double bond. The method requires a thermal treatment of α-β unsaturated malonate or acetylacetonate derivatives in the presents of at least one carboxylic acid and at least one alkaline, alkaline-earth or lanthanide halide or carboxylates.
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Corey , Journal of the American Chemical Society, The Decarboxylation of alpha, beta—Unsaturated Malonic Acid Derivatives via beta, gamma—Unsaturated Intermediates. II. The effect of alpha Substituents Upon Product Composition and Rate,1953, 75, pp. 1163-1167.
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Bonnaudet Serge
Mimoun Hubert
Firmenich SA
Winston & Strawn LLP
Zucker Paul A
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