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Monday, 12 January 2015

Efficient Metathesis of Terminal Alkynes





http://onlinelibrary.wiley.com/doi/10.1002/anie.v51.52/issuetoc



Efficient Metathesis of Terminal Alkynes (pages 13019–13022)
Dipl.-Chem. Birte Haberlag, Dr. Matthias Freytag, Dr. Constantin G. Daniliuc, Prof. Dr. Peter G. Jones and Prof. Dr. Matthias Tamm
Article first published online: 14 NOV 2012 | DOI: 10.1002/anie.201207772
Thumbnail image of graphical abstract
Now even terminal: The 2,4,6-trimethylbenzylidyne complexes [MesC[TRIPLE BOND]M{OC(CF3)2Me}3] (M=Mo, W) were synthesized from [Mo(CO)6] and [W(CO)6], respectively. The molybdenum complex is an efficient catalyst for the metathesis of internal and terminal alkynes and also for the ring-closing metathesis of internal and terminal α,ω-diynes at room temperature and low catalyst concentrations.
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