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Abstract Acyclic acid anhydrides oxidatively add to Pd(styrene)(PMe3)2 with C-O bond cleavage to give corresponding acyl(carboxylato)palladium(II) complexes 3a-3e that are isolated and identified. The acetato ligand in 3a is exchanged with added acetic acid. Treatment of 3a with formic acid at room temperature yields acetaldehyde, acetic acid and CO2. Reaction of 3a with dihydrogen liberates acetaldehyde, acetic acid and ethanol. Catalytic hydrogenolysis of octanoic and benzoic anhydrides into aldehydes and carboxylic acids was found to be catalyzed by Pd(PPh3)4.
Nagayama et al. (1995) studied this question.
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