Is the trinuclear complex the true reducing species in the Cp2TiCl2/Mn- and Cp2TiCl2/Zn-promoted pinacol coupling?

Rasmus J Enemærke, Gitte H Hjøllund, Kim Daasbjerg, Troels Skrydstrup
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引用次数: 4

Abstract

Through a combination of kinetic, voltammetric and product analysis, it has been found that a common TiIII species obtained from the metal reduction of Cp2TiCl2 is involved in the electron transfer to benzaldehyde. A common species in the pinacol dimerization step was also demonstrated. In neither of the two steps is it necessary to invoke trinuclear complexes as previously proposed.

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在Cp2TiCl2/Mn-和Cp2TiCl2/ zn促进的pinacol偶联中,三核配合物是真正的还原物质吗?
通过动力学、伏安和产物分析的结合,发现Cp2TiCl2金属还原得到的一种常见TiIII物质参与了电子向苯甲醛的转移。还证明了一种常见的品萘酚二聚化步骤。在这两个步骤中,都不需要像前面所建议的那样调用三核复合物。
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