| 摘要 |
A pivaloylacetic acid ester is prepared at a high yield by decarbonylating a pivaloylpyruvic acid ester in gas or liquid phase in the presence of an inorganic oxide catalyst which comprises aluminum in an amount of 10% by weight or more in terms of aluminum oxide, and preferably is substantially free from heavy metals, for example, Fe, Cu, Ni, Mn, Cr, Mo and Co, and exhibits a high catalytic activity and chemical stability.
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