Mild and rational synthesis of palladium complexes comprising C(4)-bound N-heterocyclic carbenes.
نویسندگان
چکیده
Oxidative addition of pyridyl-functionalised 4-iodoimidazolium salts to palladium(0) gives catalytically active complexes in which the N-heterocyclic carbene is bound to the palladium(II) centre in a non-classical bonding mode via C(4).
منابع مشابه
Palladation of diimidazolium salts at the C4 position: access to remarkably electron-rich palladium(II) centers.
Palladation of C2-protected diimidazolium salts with Pd(OAc)2 afforded complexes comprising C4-bound N-heterocyclic dicarbene ligands. The reactivity of these complexes towards Lewis acids (AgBF4, AgOAc) and Brønsted acids (H2SO4, H3PO4, HOAc) revealed that abnormal C4 bonding of the carbenes markedly increases the nucleophilicity of the coordinated palladium center as compared to C2 bonding. D...
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ورودعنوان ژورنال:
- Chemical communications
دوره 43 شماره
صفحات -
تاریخ انتشار 2006