Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof
Reexamination Certificate
2006-08-22
2006-08-22
Richter, Johann R (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acids and salts thereof
C562S411000, C562S412000, C568S320000, C568S432000, C568S815000
Reexamination Certificate
active
07094925
ABSTRACT:
A process for the oxidation of an alkyl-aromatic compound, wherein the aromatic compound is admixed with an oxidising agent or sulfur compound in the presence of an ionic liquid is described. In this process, air, dioxygen, peroxide, superoxide, any other form of active oxygen, nitrite, nitrate, nitric acid or other oxides (or oxyhalides) of nitrogen (hydrate or anhydrous) are preferably used as the oxidising agent. The process is usually under Bronsted acidic conditions. The product of the oxidation reaction is preferably a carboxylic acid or ketone or an intermediate compound in the oxidation such as an aldehyde, or alcohol. The oxidation is preferably performed in an ionic liquid containing an acid promoter such as methanesulfonic acid.
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Earle et al. Paradigm Confirmed: The First Use of Ionic Liquids to Dramatically Influence the Outcome of Chemical Reactions. Organic Letters, 2004, vol. 6 (5), p. 707-710.
Earle Martyn John
Katdare Suhas Prabhakar
Drinker Biddle & Reath LLP
Monaco Daniel A.
Richter Johann R
The Queen's University of Belfast
Witherspoon Sikarl A.
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