Direct conversion of 1‐decene to petroleum range alkanes was obtained using hydro‐metathesis reaction. To understand this reaction we employed three different well‐defined single site catalysts precursors; [(≡Si‐O‐)W(CH₃)₅] 1, [(≡Si‐O‐)Mo(≡C^tBu)(CH₂^tBu)₂] 2 and [(≡Si‐O)Ta(=CH^tBu)(CH₂^tBu)₂] 3. We witnessed that in our conditions olefin metathesis/isomerization of 1‐decene occurs much faster followed by reduction of the newly formed olefins rather than reduction of the 1‐decene to decane, followed by metathesis of decane. We found that Mo‐based catalyst favors [2+2] cycloaddition of 1‐decene forming metallocarbene, followed by reduction of the newly formed olefins to alkanes. However, in the case of W and Ta‐based catalysts, a rapid isomerization (migration) of the double bond followed by olefin metathesis and reduction of the newly formed olefins were observed. We witnessed that silica supported W catalyst precursor 1 and Mo catalyst precursor 2 are better catalysts for hydro‐metathesis reaction with TONs of 818 and 808 than Ta‐based catalyst 3 (TON of 334). This comparison of the catalysts provides us a better understanding that, if a catalyst is efficient in olefin metathesis reaction it would be a better catalyst for hydro‐metathesis reaction.

中文翻译：

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使用定义明确的二氧化硅负载的W，Mo，Ta碳烯/碳烯络合物了解1-癸烯的加氢复分解反应

使用加氢复分解反应可将1-癸烯直接转化为石油类烷烃。为了理解该反应，我们采用了三种不同的定义明确的单中心催化剂前体。[（≡Si- ø - ）W（CH ₃）₅ ] 1，[（≡Si- ø - ）的Mo（≡C^吨卜）（CH ₂^吨丁基）₂ ] 2和[（≡Si-O）的Ta （= CH ^t Bu）（CH ₂ ^t Bu）₂ ] 3。我们目睹了在我们的条件下1-癸烯的烯烃复分解/异构化发生的速度要快得多，其次是还原新形成的烯烃，而不是将1-癸烯还原为癸烷，然后再进行癸烷的复分解。我们发现，基于Mo的催化剂有利于1-癸烯形成茂金属的[2 + 2]环加成反应，然后将新形成的烯烃还原为烷烃。但是，在W和Ta基催化剂的情况下，观察到双键快速异构化（迁移），随后发生烯烃复分解和新形成的烯烃的还原。我们目睹了二氧化硅负载的W催化剂前驱体1和Mo催化剂前驱体2是比Ta基催化剂3更好的加氢复分解反应催化剂，其TONs为818和808。（334吨）。催化剂的这种比较使我们更好地理解，如果催化剂在烯烃复分解反应中有效，那么它将是加氢复分解反应的较好催化剂。