title: Synthesis of mixed acid anhydrides from methane and carbon dioxide in acid solvents.
abstract: [reaction: see text] The reaction of CH(4) with CO(2) has been performed in anhydrous acids using VO(acac)(2) and K(2)S(2)O(8) as promoters. NMR analysis establishes that the primary product is a mixed anhydride of acetic acid and the acid solvent. In sulfuric acid, the overall reaction is CH(4) + CO(2) + SO(3) --> CH(3)C(O)-O-SO(3)H. Hydrolysis of the mixed anhydride produces acetic acid and the solvent acid. When trifluoroacetic acid is the solvent, acetic acid is primarily formed via the reaction CH(4) + CF(3)COOH --> CH(3)COOH + CHF(3).
authors.affiliation: Department of Chemical Engineering, University of California-Berkeley, Berkeley, California 94720, USA.
authors.forename: Mark
authors.initials: M
authors.lastname: Zerella
authors.forename: Sudip
authors.initials: S
authors.lastname: Mukhopadhyay
authors.forename: Alexis T
authors.initials: AT
authors.lastname: Bell