Hafnium-catalyzed transesterification

Details Hafnium-catalyzed transesterification Hafnium-catalyzed transesterification

C - Chemistry, Metallurgy

07

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C07C 67/02 (2006.01) C07C 67/03 (2006.01) C07C 69/54 (2006.01) C07C 323/54 (2006.01) C07D 263/04 (2006.01) C07D 295/15 (2006.01)

Patent

CA 2037163

ABSTRACT An ester of a carboxylic acid is prepared via a transesterification reaction which comprises reacting a lower alkyl ester of carboxylic acid with a higher alkyl alcohol in the presence of a catalyst consisting of a hafnium chelate derived from hafnium tetrachloride, bis(alkoxide)hafnium dichlorides, or hafnium tetraalkoxides in the presence of 1,3-dicarbonyl compounds.

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