过渡金属催化的甲硅烷基化通常涉及均相不可回收的催化体系的使用。在这项工作中,已经报道了合成芳基硅烷的可回收催化体系的第一个实例,该体系利用了双金属配合物Pd–Pt–Fe 3 O 4纳米颗粒。通过使芳基碘化物(或溴化物)与氢化硅烷反应来制备各种芳基硅烷。该方法显示出对酯,酮,醛,硝基和氰基的良好官能团耐受性。双金属Pd–Pt–Fe 3 O 4催化体系的活性优于单金属Pt–Fe 3 O 4和Pd–Fe 3 O 4。催化剂。此外,双金属Pd–Pt–Fe 3 O 4催化体系可以轻松回收并重复使用超过20个循环。
The first platinum-catalyzed selective silylation of aryl halides including aryl iodides and bromides having an electron-withdrawing group is described. The reaction takes place rapidly in NMP with triethylsilane as a silicon source and sodium acetate to provide functionalized aryltriethylsilanes in moderate to good yields. Heteroaromatic halides also were found to be readily silylated with triethylsilane. The procedure is chemoselective and tolerates a wide variety of functional groups.