Imidazolylidenes, imidazolinylidenes and imidazolidines

N‐Heterocyclic‐Carbene‐Induced Monomerization of Sterically Encumbered Dialkylmagnesium and Dialkylmanganese Polymers

“…The most indicative resonance of the carbene coordination was that of the highly deshielded carbene carbon at 188.6 and 185.9 ppm for 1 and 3, respectively (the free IPr [19] shows the corresponding resonance at δ = 220.6 ppm).…”

Platinum(ii) N-heterocyclic carbene complexes: coordination and cyclometallation.

“…Imidazolium salts were synthesised via literature routes: 1a via the copper catalysed coupling of 4-fluoro-phenyl boronic acid with imidazole, 44 followed by reaction with MeI; 1b via the condensation of 4-fluoro-aniline with glyoxal, 45 followed by reaction with chloromethylethyl ether; 1c via the copper catalysed coupling of 4-fluoro-phenyl boronic acid with imidazole, followed by reaction with 4-fluoro-benzyl bromide; 1d via the reaction of methylimidazole with 4-fluoro-benzyl bromide. Silver NHC salts were then prepared via the reaction of imidazolium salt with silver oxide in DCM.…”

Single-Electron Oxidation of Monomeric Copper(I) Alkyl Complexes: Evidence for Reductive Elimination through Bimolecular Formation of Alkanes

“…The ligands IMes, SIPr, and dtbpe as well as the complexes (IPr)Cu-(OAc), (IPr)Cu(Me), (IPr)Cu(Et), and (IPr)Cu(OTf) were prepared according to literature procedures. 30,47,[52][53][54] (SIPr)Cu(OAc) (1) 0.059 g, 0.50 mmol), and toluene (15 mL), and the resulting solution was stirred for 2 h at room temperature. The solution was filtered through Celite, approximately half of the solvent was removed in vacuo, and hexanes were added to form a white precipitate.…”