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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Highly efficient Rh(I) and Ir(I) single and dual metal catalysed dihydroalkoxylation reactions of alkyne diols
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Highly efficient Rh(I) and Ir(I) single and dual metal catalysed dihydroalkoxylation reactions of alkyne diols

机译:炔二醇的高效Rh(I)和Ir(I)单金属和双金属催化的二氢烷氧基化反应

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摘要

A highly efficient rhodium(I) and iridium(I) catalysed dihydroalkoxylation reaction of alkyne diols is employed here for the synthesis of spiroketals and a fused bicyclic ketal. The two metal catalysts show differential selectivity and efficiency for either the cyclisation of the 5-exo or 6-endo-membered rings. For the first time, a dual metal (Rh and Ir) catalyst system is effectively utilised for the formation of the 5,6-spiroketals, more efficiently than the single metal catalysts. The two different metals create a dual activation pathway to enhance the 5- and 6-membered ring closure as compared with the equivalent single catalysts.
机译:炔二醇的高效铑(I)和铱(I)催化的二氢烷氧基化反应用于合成螺缩酮和稠合的双环缩酮。两种金属催化剂对于5-exo或6-endo-员环的环化显示不同的选择性和效率。首次,一种双金属(Rh和Ir)催化剂体系被有效地用于形成5,6-螺碳,比单金属催化剂更有效。与等效的单一催化剂相比,两种不同的金属产生双重活化途径,以增强5和6元环的闭合。

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