Bimetallic scorpionate-based helical organoaluminum complexes for efficient carbon dioxide fixation into a variety of cyclic carbonates
作者:Marta Navarro、Luis F. Sánchez-Barba、Andrés Garcés、Juan Fernández-Baeza、Israel Fernández、Agustín Lara-Sánchez、Ana M. Rodríguez
DOI:10.1039/d0cy00593b
日期:——
preferential arrangement of the ancillary scorpionates in the bimetallic complexes and rationalized the proposed reaction mechanism. Bimetallic complexes were investigated as catalysts in combination with halides for the cycloaddition reaction of CO2 with a wide range of epoxides for cyclic carbonate formation. These studies led to the development of a sustainable, inexpensive, efficient and selective bicomponent
可以通过加热初步的双核加合物或通过直接加热2当量的配体配体来获得新的双金属螺旋铝配合物。的AlR 3。X射线衍射分析证实了配体中的高配位通用性和配合物中存在螺旋手性。DFT计算证实了双金属配合物中辅助蝎子的优先排列,并合理化了所提出的反应机理。研究了双金属配合物作为催化剂与卤化物结合用于CO 2的环加成反应与多种环氧化物形成环状碳酸酯。这些研究导致了可持续,廉价,高效和选择性的双组分系统的开发,该系统具有非常广泛的底物范围,包括内部的和具有挑战性的生物基三取代萜烯衍生的底物,在温和条件下可实现高反式环氧丙烷的转化率(79%转化温度为70°C,10 bar CO 2,1 mol%,66 h)