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An Iridium Difluoroketene Complex: Synthesis and Isolation

✍ Scribed by Joseph G. Cordaro; Herman van Halbeek; Robert G. Bergman

Book ID
101563906
Publisher
John Wiley and Sons
Year
2004
Tongue
English
Weight
137 KB
Volume
43
Category
Article
ISSN
0044-8249

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✦ Synopsis

Dedicated to Professor John E. Bercaw on the occasion of his 60th birthday

Despite substantial research on the chemistry of ketenes, efforts to isolate or characterize the electron-deficient difluoroketene (F 2 C=C=O) have met with little success. [1] While an early claim of the preparation of F 2 C=C=O exists, [2] attempts to repeat this synthesis were not success-

[*] J.

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Synthesis of enol and vinyl esters catal
Synthesis of enol and vinyl esters catalyzed by an iridium complex
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Enol and vinyl esters were successfully synthesized by the use of an iridium complex as a catalyst. The reaction of carboxylic acid with terminal alkynes in the presence of catalytic amounts of [Ir(cod)Cl] 2 and Na 2 CO 3 gave the corresponding 1-alkenyl esters. The addition of carboxylic acids to a