Group 9 complexes of an N-heterocycle carbene bearing a pentafluorobenzyl substituent: attempted dehydrofluorinative coupling of cyclopentadienyl and N-heterocycle carbene ligands

Minimizing side reactions in chemoenzymatic dynamic kinetic resolution: organometallic and material strategies

“…3 [Cp*IrCl 2 (1-benzyl,3-methyl-imidazol-2-ylidene)] was prepared as previously reported. 26,27 2,5-Di-O-methanesulfonyl-1,4:3,6-dianhydro-D-sorbitol was prepared as previously reported. 19 The following reagents were used as supplied; Novozym® 435, isopropenyl acetate, DPEN, PHEN, benzylamine, Tetraethylorthosilicate (TEOS), PEG 400 and AOT (Sigma-Aldrich), Rac-1-phenyl ethanol (Fluka and Sigma-Aldrich), potassium carbonate (Lancaster), phosphoric acid (85% aqueous solution Lancaster).…”

Influence of substituents on cation–anion contacts in imidazolium perrhenates

“…The imidazolium bromide 35,[37][38][39][40][41][42][43][44][45][46] and -perrhenate salts 29 were synthesised according to literature procedures. 1,2-Dimethylimidazole was purchased from Acros Organics.…”

Fluorinated N-heterocyclic carbenes rhodium (I) complexes and their activity in hydrosilylation of propargylic alcohols

“…13 C NMR (acetone-d 6 ): 28.9, 33.2 (CH 2 -COD); 42.6 (CH 2 -benzyl); 55.1 (CH 2 -fluorinated benzyl); 64.5 (CH, COD); 128.9 (CH-backbone-NHC); 140. 5,136.3,121.3 (CH aromatic);149.9,148.5,143.5 (CF aromatic); 185.0 (carbene, J Rh-C ¼ 51.64 Hz). Anal.…”

“…Found: C,50.79;H,4.18;N,4.28 Mass spectrum: m/z ¼ 549 (-Cl ¼ C 25 H 23 F 5 N 2 Rh), m/z ¼ 440 (-COD ¼ C 17 H 11 F 5 N 2 Rh), m/z ¼ 476 (C 17 H 11 F 5 N 2 ClRh), m/z ¼ 339.1 (single ligand C 17 H 12 F 5 N 2 ), m/z ¼ 91 (C 7 H 7 ). 5,139.5,140.6,143.5,148.5 (CF aromatic) …”