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Palladium(II) catalyzed carbonylation of ketones

✍ Scribed by Othman Hamed; Arab El-Qisairi; Patrick M. Henry

Publisher
Elsevier Science
Year
2000
Tongue
French
Weight
155 KB
Volume
41
Category
Article
ISSN
0040-4039

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✦ Synopsis

Cyclic ketones react with PdCl 2 in methanol under a CO atmosphere to give mainly diesters by a ring cleavage reaction along with some chloro-substituted monoester. 13 CO labeling experiments indicate the major product is formed by a mechanism involving Pd(II)-CO 2 CH 3 insertion across the double bond of the enol form of the ketone. Pd(II) elimination and acid-catalyzed ring cleavage form a second methyl ester group.

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