Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210, United States.
J Am Chem Soc. 2020 Mar 25;142(12):5521-5525. doi: 10.1021/jacs.0c01026. Epub 2020 Mar 16.
The development of metalated covalent organic frameworks (COFs) is useful for generating recyclable catalytic systems for practical applications. Herein, we report the synthesis, characterization, and catalytic properties of an azine-linked two-dimensional (2D) COF containing nickel-doped dehydrobenzoannulene (DBA) units. We demonstrate that Ni-DBA-2D-COF can be used to reductively cleave the aryl C-S bonds of several organosulfur compounds utilizing dimethylethylsilane as the reducing agent. The Ni-DBA-2D-COF catalytic system displays excellent recyclability and good yields. This work highlights a rare example of utilizing metalated DBA complexes to perform catalytic transformations.
金属化共价有机骨架（COFs）的发展对于生成用于实际应用的可回收催化体系很有用。在此，我们报告了一种含有镍掺杂去氢苯并环庚烯（DBA）单元的嗪键合二维（2D）COF 的合成、表征和催化性能。我们证明，Ni-DBA-2D-COF 可以利用二甲基乙基硅烷作为还原剂还原断裂几种有机硫化合物的芳基 C-S 键。Ni-DBA-2D-COF 催化体系具有出色的可回收性和良好的收率。这项工作突出了利用金属化 DBA 配合物进行催化转化的罕见实例。
