Process for the preparation of acetic anhydride

Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal

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C07C 5156

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046184600

ABSTRACT:
The invention relates to a process for the preparation of acetic anhydride by carbonylation. In the process, carbon monoxide is reacted with methyl acetate in the liquid phase, in a carboxylic acid, in the presence of an effective amount of nickel, methyl iodide, an ionic iodide selected from the group consisting of quaternary ammonium iodides, quaternary phosphonium iodides, sodium iodide, potassium iodide and cesium iodide, and a co-catalyst selected from the group consisting of lithium salts and alkaline earth metal salts.

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Lange's Handbook of Chemistry, 12th Ed. (1979) McGraw-Hill, Publ. pp. 4-40, 4-94 and 4-111.
Onouchi, Takeshi et al., Chemical Abstracts, vol. 80 (1974) #107,994f.
Gauthier-Lafaye, Jean et al., Chemical Abstracts, vol. 94 (1981) #156,327p.
Falbe, Jurgen, "Carbon Monoxide in Organic Synthesis" (1970) p. 113, Springer, Publ.

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