A straightforward in situ preparation of new chiral amido alkyl ate yttrium complexes is described. They catalysed the enantioselective cyclisation of 1,2-dialkyl-substituted aminopentenes in up to 77% ee, a significant value for this challenging transformation. Complex [(R)-L0][Y(CH2TMS)2·Li(THF)4] undergoes C–H bond activation resulting in the formation of an original dimeric heterobimetallic yttrium complex which also acts as an active precatalyst.
报道了一种新型手性
氨基烷氧基
钇配合物的直接原位制备方法。这些配合物催化1,2-二烷基取代的
氨基
戊烯进行高达77% ee的对映选择性环化反应,这是一个具有挑战性的转化过程的重要值。配合物[(R)-L0][Y(
CH2TMS)2·Li(THF)4]经历C-H键活化,形成了一种独特的二聚异双
金属
钇配合物,该配合物也作为活性前催化剂发挥作用。