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Improvement of the activity, stability, and chemoselectivity of alkyne‐metathesis catalysts is necessary before this promising methodology can become a routine method to construct C≡C triple bonds. Herein, we show that grafting of the known molecular catalyst [MesC≡Mo(OtBuF6)3] (1, Mes=2,4,6‐trimethylphenyl, OtBuF6=hexafluoro‐tert‐butoxy) onto partially dehydroxylated silica gave a well‐defined silica‐supported...
Molybdän‐Katalysatoren In der Zuschrift auf S. 14166 ff. zeigen M. Tamm, C. Copéret et al., dass mit dem neuen heterogenen Alkinmetathesekatalysator [(≡SiO)Mo(≡CMes)(OtBuF6)2] und mit der molekularen Vorstufe [MesC≡Mo(OtBuF6)3] sehr hohe Umsatzzahlen erzielt werden können.
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