Tin and iron halogenides as additives in ruthenium-catalyzed olefin metathesis

Mechanistic comparison of ruthenium olefin metathesis catalysts: DFT insight into relative reactivity and decomposition behavior

“…(ii) The improvement of first-generation catalyst efficiency by addition of phenols [10]. (iii) Enhanced performance of first-generation catalysts upon addition of tin and iron halogenides [11].…”

Studying and Suppressing Olefin Isomerization Side Reactions During ADMET Polymerizations

“…For instance, phenylphosphoric acid13 and benzoquinones14 have been reported to efficiently suppress olefin isomerization side reactions. Moreover, tin and iron halogenides have been reported to not only enhance the metathesis activity of the Grubbs type catalysts, but also to reduce or even completely suppress the isomerization side reactions 15…”

Mixed Isobutylphobane/N‐Heterocyclic Carbene Ruthenium‐ Indenylidene Complexes: Synthesis and Catalytic Evaluation in Olefin Metathesis Reactions

“…Indeed, DFT calculations showed that the substrate-induced decomposition of propagating species decreased in the order 1 > 5 > 2, in good agreement with experimental observations. [27] Further enhancement of the catalytic efficiency of 5 could be achieved by the addition of diverse co-catalysts, such as phenols, [28] tin and iron halogenides, [29] or ionic liquids. [30] A stoichiometric reaction of 5 with 2-isopropoxystyrene afforded the chelated alkoxybenzylidene compound 7, which was found to be highly active at promoting the RCM of N,N-diallyltosylamide.…”