The Negishi Catalysis: Full Study of the Complications in the Transmetalation Step and Consequences for the Coupling Products
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资源简介：
In addition to the
expected products, trans- and cis-[PdRfMe(PPh3)2], the transmetalation between
ZnMe2 and trans-[PdRfCl(PPh3)2] yields [PdMeCl(PPh3)2] and ZnRfMe
as the result of secondary transmetalation processes. ZnRfMe is also
formed by reaction of trans- and cis-[PdRfMe(PPh3)2] with ZnMe2. The
different competitive reaction mechanisms that participate in the
transmetalations have been studied by experiments and by DFT calculations.
The relative contribution of each reaction pathway in the formation
of the unwanted product ZnRfMe has been measured. The effect of excess
ligand (PPh3) on the several transmetalations has been
established.
创建时间：
2017-12-19
