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- W2509588317 endingPage "3460" @default.
- W2509588317 startingPage "3452" @default.
- W2509588317 abstract "A rare Ta bis(imido) complex, which has unique reactivity, was prepared by manipulating the coordination sphere of a CCC-NHC pincer Ta complex. The reaction of lithium tert-butylamide with complex 1 yielded (1,3-bis(3′-butylimidazol-2′-yl-1′-idene)-2-phenylene)bis(tert-butylimido)tantalum(V) (2) as a lithium iodide bridged dimer, as determined by the X-ray structure. Complex 2 catalytically cyclized α,ω-aminoalkenes to effect an oxidative amination of alkenes (dehydrogenation by C–H activation) and produced a cyclic imine, an equivalent of reduced substrate, and varying proportions of hydroamination. Various additives and concentration impact the catalytic results. Computational and experimental observations have led to an initial mechanistic hypothesis. Based upon it, precatalyst 2 appears to be the first example of a bifunctional catalyst (MH-NHR) that is highly selective for nonpolar C═C bonds in preference to polar C═X bonds for outer-sphere hydrogenation." @default.
- W2509588317 created "2016-09-16" @default.
- W2509588317 creator A5035496099 @default.
- W2509588317 creator A5036175953 @default.
- W2509588317 creator A5036895823 @default.
- W2509588317 creator A5037614116 @default.
- W2509588317 creator A5051429869 @default.
- W2509588317 creator A5061392998 @default.
- W2509588317 creator A5074578908 @default.
- W2509588317 creator A5080609124 @default.
- W2509588317 creator A5083166946 @default.
- W2509588317 date "2016-08-15" @default.
- W2509588317 modified "2023-10-15" @default.
- W2509588317 title "Extreme π-Loading as a Design Element for Accessing Imido Ligand Reactivity. A CCC-NHC Pincer Tantalum Bis(imido) Complex: Synthesis, Characterization, and Catalytic Oxidative Amination of Alkenes" @default.
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