A modular, air-stable nickel precatalyst.

A modular, air-stable nickel precatalyst.
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DOI:
10.1021/acs.orglett.5b00766
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发表时间:
2015-05-01
期刊:
影响因子:
5.2
通讯作者:
Doyle AG
Doyle AG
中科院分区:
化学1区
文献类型:
--
作者:
Shields JD;Gray EE;Doyle AG

文献摘要

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描述了空气稳定的结晶固体 [(TMEDA)Ni(otolyl) Cl] 的合成和催化活性。该配合物是各种镍催化转化中的有效预催化剂。 TMEDA 的不稳定性允许使用多种配体,包括单齿和二齿膦、二亚胺和 N-杂环卡宾。还报道了初步的机理研究,表明 [(TMEDA)Ni(o-tolyl)Cl] 可以通过 Ni-B 或 Ni-Ni 金属转移事件激活,具体取决于反应条件。
The synthesis and catalytic activity of [(TMEDA)Ni(otolyl) Cl], an air-stable, crystalline solid, is described. This complex is an effective precatalyst in a variety of nickel-catalyzed transformations. The lability of TMEDA allows a wide variety of ligands to be used, including mono- and bidentate phosphines, diimines, and N-heterocyclic carbenes. Preliminary mechanistic studies are also reported, which suggest that [(TMEDA)Ni(o-tolyl)Cl] can activate by either a Ni–B or Ni–Ni transmetalation event, depending on the reaction conditions.