Department of Chemistry: Metallorganics and Inorganic Materials, Technische Universität Berlin, Strasse des 17. Juni 135, 10623 Berlin, Germany.
Angew Chem Int Ed Engl. 2013 Apr 15;52(16):4302-11. doi: 10.1002/anie.201209766. Epub 2013 Mar 1.
In contrast to the well-established chemistry of ketones (R2C=O), the reactivity of the elusive heavier congeners R2E=O (E=Si, Ge, Sn, Pb) is far less explored because of the high polarity of the E=O bonds and hence their tendency to oligomerize with no activation barrier. Very recently, great advances have been achieved in the synthesis of isolable compounds with E=O bonds, including the investigation of donor-stabilized isolable silanones and the first stable "genuine" germanone. These compounds show drastically different reactivities compared to ketones and represent versatile building blocks in silicon-oxygen and germanium-oxygen chemistry. This and other exciting achievements are described in this Minireview.
与酮类（R2C=O）成熟的化学性质形成对比的是，由于 E=O 键的高极性，以及它们在没有活化能垒的情况下倾向于聚合的趋势，因此难以捉摸的较重同系物 R2E=O（E=Si、Ge、Sn、Pb）的反应性还远未得到充分探索。最近，在合成具有 E=O 键的可分离化合物方面取得了重大进展，包括对供体稳定的可分离硅酮和第一个稳定的“真正”锗酮的研究。与酮类相比，这些化合物表现出截然不同的反应性，是硅氧和锗氧化学中多功能的构建块。本综述描述了这一进展以及其他令人兴奋的成果。
