1. An Improved Protocol forthe Synthesis of [(η4-C4R4)Co(η5-C5H5)] Complexes.
- Author
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Guillaume Bertrand, Ludovic Tortech, Denis Fichou, Max Malacria, Corinne Aubert, and Vincent Gandon
- Subjects
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COMPLEX compounds synthesis , *METAL complexes , *ORGANOCOBALT compounds , *ALKYNES , *CHEMICAL reactions , *MICROWAVES , *CYCLOPENTADIENE , *REACTIVITY (Chemistry) - Abstract
The reaction of bulky alkynes C2R2with (η5-C5H5)Co(CO)(dimethylfumarate) undermicrowave irradiation provides complexes of the type [(η4-C4R4)Co(η5-C5H5)] in good to excellent yields. This protocol representsa significant improvement over those reported previously. In particular,the formation of insertion products such as cyclopentadienones orcyclohexadienes can be avoided. In addition, because of the exceptionalstability of (η5-C5H5)Co(CO)(dimethylfumarate), the reactions can be carried out in crude solvents. Theeasy access to [(η4-C4R4)Co(η5-C5H5)] complexes stimulated a studyof their reactivity, notably under cross-coupling conditions. [ABSTRACT FROM AUTHOR]
- Published
- 2012
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