Drusgala Manfred, Frühwirt Philipp, Glotz Gabriel, Hogrefe Katharina, Torvisco Ana, Fischer Roland C, Wilkening H Martin R, Kelterer Anne-Marie, Gescheidt Georg, Haas Michael
Institute of Inorganic Chemistry Graz University of Technology Stremayrgasse 9/IV 8010 Graz Austria.
Institute of Physical and Theoretical Chemistry Graz University of Technology Stremayrgasse 9/II 8010 Graz Austria.
Angew Chem Weinheim Bergstr Ger. 2021 Oct 25;133(44):23838-23842. doi: 10.1002/ange.202111636. Epub 2021 Sep 28.
We have synthesized the first isolable geminal bisenolates LKGe[(CO)R] (=2,4,6-trimethylphenyl (,), L=THF for () or [18]-crown-6 for ()), 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 , 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.
我们合成了首例可分离的偕二双醇盐LKGe[(CO)R]（=2,4,6-三甲基苯基(,)，对于()，L = 四氢呋喃；对于()，L = [18]-冠-6），这是一种用于合成有机金属试剂的新型合成子。通过核磁共振光谱和X射线晶体学分析证实了这些衍生物的形成。这些阴离子的紫外/可见光谱显示出三个不同的谱带，通过密度泛函理论计算对其进行了归属。通过与两种不同类型的亲电试剂（酰氯和卤代烃）反应，证明了作为大分子化学中新结构单元的效率。在所有情况下，盐复分解反应均以良好的产率生成了新型的锗基光引发剂。
