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′‐Substituted 1,2‐Ethanediamine Ligands and Their Lithium, Aluminium, and Gallium Derivatives
作者:Robert Kretschmer、Maximilian Dehmel、Michael Bodensteiner
DOI:10.1002/ejic.201601355
日期:2017.2.3
Sterically demanding N,N',N'-substituted 1,2-ethanediamine ligands have been prepared from commercially available starting materials by applying a facile one-step procedure. These ligands offer advantages compared to known systems: a suppressed delocalization due to the saturated backbone inhibits a noninnocent behaviour and the low symmetry of the related metal complexes makes them potential candidates
空间要求高的 N,N',N'-取代的 1,2-乙二胺配体已通过应用简便的一步程序从市售的起始材料中制备。与已知系统相比,这些配体具有优势:由于饱和主链而抑制的离域化抑制了非无辜行为,并且相关金属配合物的低对称性使它们成为不对称催化的潜在候选者。配体很容易转化为相应的锂衍生物 4,而锂衍生物 4 又作为起始材料分别获得相应的二氯化铝和二氯化镓 5 和 6。此外,Al(CH3)(3) 的去质子化产生相关的二甲基丙烷 7。所有主族元素化合物都已通过单 X 射线晶体学和光谱方法进行了研究。