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Isolable Geminal Bisgermenolates: A New Synthon in Organometallic Chemistry
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2021-08-31 , DOI: 10.1002/anie.202111636
Manfred Drusgala 1 , Philipp Frühwirt 2 , Gabriel Glotz 2 , Katharina Hogrefe 3 , Ana Torvisco 1 , Roland C Fischer 1 , H Martin R Wilkening 3 , Anne-Marie Kelterer 2 , Georg Gescheidt 2 , Michael Haas 1
Affiliation  

We have synthesized the first isolable geminal bisenolates L2K2Ge[(CO)R]2 (R=2,4,6-trimethylphenyl (2 a,b), L=THF for (2 a) or [18]-crown-6 for (2 b)), a new synthon for the synthesis of organometallic reagents. The formation of these derivatives was confirmed by NMR spectroscopy and X-ray crystallographic analysis. The UV/Vis spectra of these anions show three distinct bands, which were assigned by DFT calculations. The efficiency of 2 a,b to serve as new building block in macromolecular chemistry is demonstrated by the reactions with two different types of electrophiles (acid chlorides and alkyl halides). In all cases the salt metathesis reaction gave rise to novel Ge-based photoinitiators in good yields.

中文翻译:

可分离的偕双香醇化合物:有机金属化学中的一种新合成物

我们合成了第一个可分离的孪生双烯醇化物 L 2 K 2 Ge[(CO)R] 2 ( R =2,4,6-三甲基苯基 ( 2 a , b ), L=THF for ( 2 a ) or [18]- Crown-6 for ( 2 b )),一种用于合成有机金属试剂的新合成子。这些衍生物的形成通过NMR光谱和X射线晶体学分析得到证实。这些阴离子的紫外/可见光谱显示出三个不同的谱带,这些谱带是通过 DFT 计算指定的。2 a , b作为大分子化学中的新结构单元的效率通过与两种不同类型的亲电子试剂(酰基氯和烷基卤化物)的反应得到证明。在所有情况下,盐复分解反应都以良好的产率产生新型的基于Ge的光引发剂。
更新日期:2021-10-19
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