Kassamba Seydou, Perez-Luna Alejandro, Ferreira Franck, Durandetti Muriel
Normandie Univ., UNIROUEN, INSA Rouen, CNRS, Laboratoire COBRA (UMR 6014 & FR 3038), 76000 Rouen, France.
Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, F-75005 Paris, France.
Chem Commun (Camb). 2022 Mar 22;58(24):3901-3904. doi: 10.1039/d1cc07163g.
Intramolecular alkyne germylzincation giving access to a wide range of germoles is achieved from triarylhydrogermanes in the presence of diethylzinc and AIBN as radical initiator. The reaction proceeds through activation of the Ge-H bond, leading to a heteroarylzinc intermediate after cyclisation, which can then be involved in a post-functionalisation reaction. Our results show that only 5- cyclizations occur, with benzogermoles being exclusively obtained.
在二乙基锌和作为自由基引发剂的偶氮二异丁腈存在下，由三芳基氢化锗实现分子内炔基锗锌化，从而获得多种锗茂。该反应通过Ge-H键的活化进行，环化后生成杂芳基锌中间体，然后该中间体可参与后官能团化反应。我们的结果表明，仅发生5-环化反应，且仅能得到苯并锗茂。
