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Showing posts with label Efficient Metathesis of Terminal Alkynes. Show all posts
Showing posts with label Efficient Metathesis of Terminal Alkynes. Show all posts

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.