Journal
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
Volume 2015, Issue 20, Pages 4510-4518Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejoc.201500483
Keywords
Sandwich complexes; Metathesis; Molecular devices; 1,1 '-Dialkynylferrocenes; Synthetic methods
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Funding
- Leibniz Universitat Hannover
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In the construction of ferrocene-based molecular wires, alkyne metathesis was investigated as an alternative to palladium-catalyzed coupling reactions for the synthesis of alkynyl ferrocenes. With a Mortreux catalyst system [Mo(CO)(6), 4-chloro- or 2-fluorophenol], (1-propynyl) ferrocenes gave the expected homo metathesis products in moderate yields. Because the Mortreux catalyst system is not compatible with 1,1'-dialkynylferrocenes, a nitridomolybdenum catalyst introduced by Furstner was tested in bidirectional homo and cross-alkyne metathesis reactions. Although the homo alkyne metathesis products were obtained in poor yields, the cross-alkyne metathesis reactions afforded the expected products in good overall yields.
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