Bimetallic nanosized solids with acid and redox properties for catalytic activation of C–C and C–H bonds
作者:Jose R. Cabrero-Antonino、María Tejeda-Serrano、Manuel Quesada、Jose A. Vidal-Moya、Antonio Leyva-Pérez、Avelino Corma
DOI:10.1039/c6sc03335k
日期:——
A new approach is presented to form self-supported bimetallic nanosized solids with acid and redox catalyticproperties. They are water-, air- and H2-stable, and are able to activate demanding C–C and C–H reactions. A detailed mechanistic study on the formation of the Ag–Fe bimetallic system shows that a rapid redox-coupled sequence between Ag+, O2 (air) and Fe2+ occurs, giving monodisperse Ag nanoparticles
提出了一种形成具有酸和氧化还原催化特性的自支撑双金属纳米固体的新方法。它们对水、空气和 H 2稳定,并且能够激活要求苛刻的 C–C 和 C–H 反应。对 Ag-Fe 双金属体系形成的详细机理研究表明,Ag +、O 2(空气)和 Fe 2+之间发生快速氧化还原耦合序列,产生由 O 桥联双原子 Fe 3+支撑的单分散 Ag 纳米粒子三氟甲酰亚胺。该系统可以扩展到嵌入 Cu 2+、Bi 3+和 Yb 3+三氟甲酰亚胺基质中的银纳米颗粒。
Iron-Catalysed Markovnikov Hydrothiolation of Styrenes
作者:Jose R. Cabrero-Antonino、Antonio Leyva-Pérez、Avelino Corma
DOI:10.1002/adsc.201100731
日期:2012.3
The bis(triflimide)iron(III) salt catalyzes the hydrothiolation of styrenes in a Markovnikov fashion with good selectivities and high yields. After isolation, different benzylic thioethers are obtained. This iron(III) catalyst is unique in terms of regioselectivity and represents a sustainable and economic alternative to those processes based on stoichiometric reagents.