Abstract

Abstract (E)-phenyl 2-pyridyl ketone O-acyloximes (PPAO) could be highly activated by metal ions such as Fe3+, Cu2+, and Zn2+, and the most effective catalyst for the synthesis of carboxylic esters was found to be Zn2+. Furthermore, sterically hindered carboxylic esters were easily obtained utilizing PPAOs and alcoholates in high yields.

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