Selective C-C bonds formation, N-alkylation and benzo[d]imidazoles synthesis by a recyclable zinc composite
作者:Guanxin Zhu、Zheng-Chao Duan、Haiyan Zhu、Dongdong Ye、Dawei Wang
DOI:10.1016/j.cclet.2021.06.060
日期:2022.1
reaction, dehydrogenation and heterocycles synthesis, instead of noble metals. The uniformly dispersed zinc composites were designed, synthesized and carefully characterized by means of XPS, EDS, TEM and XRD. The resulting zinc composite showed good catalytic activity for the N-alkylation of amines with amines, ketones with alcohols in water under base-free conditions, while unsaturated carbonyl compounds
地球上丰富的金属是便宜得多、有前途的有价值的金属,可以代替贵金属作为借氢反应、脱氢和杂环合成的催化剂。通过 XPS、EDS、TEM 和 XRD 设计、合成和仔细表征均匀分散的锌复合材料。所得锌复合物在无碱条件下对胺与胺、酮与醇在水中的N-烷基化表现出良好的催化活性,同时通过调整反应条件也可以合成不饱和羰基化合物。重要的是,首次实现了2-芳基-1H-苯并[ d]咪唑衍生物,在绿色条件下使用这种锌复合物。同时,这种锌催化剂可以很容易地回收和重复使用至少五次。