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Herein the sodium alkylmagnesium amide [Na4Mg2(TMP)6(nBu)2] (TMP=2,2,6,6‐tetramethylpiperidide), a template base as its deprotonating action is dictated primarily by its 12 atom ring structure, is studied with the common N‐heterocyclic carbene (NHC) IPr [1,3‐bis(2,6‐diisopropylphenyl)imidazol‐2‐ylidene]. Remarkably, magnesiation of IPr occurs at the para‐position of an aryl substituent, sodiation...
Extraausgabe!Die para(normale) Metallierung des Arylsubstituenten eines N‐heterocyclischen Carbens wurde beobachtet. In der Zuschrift auf S. 14281 ff. zeigen R. E. Mulvey et al., dass durch die Reaktion des NHC mit einem basischen Templat für einen inversen Kronenether drei Metall‐Ligand‐Kontakte induziert werden: eine normale dative Na‐C‐Bindung, eine unnormale Na‐C‐Bindung und eine “paranormale”...
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