Acyl Transfer Reaction Catalyzed by Cu(2+) Ion Complex of a Lipolhilic Hydroxyimidazole-ligand in AOT Reverse Micelles. Effects of Change of Core Solvent from Water to DMF
The transfer of acyl group of p-nitrophenyl picolinate to alcohol acceptors has been investigated kinetically in AOT reverse micelles using hexane and DMF as the bulk and the core solvents, respectively.The reaction was found to be remarkably catalyzed by a 1:2 complex of Cu(2+) ion and N-dodecyl-2-hydroxymethylimidazole ligand involving the acylated ligand as the intermediate.It was also observed that the reaction in the reverse micelles was much faster than in pure DMF.
Hydrolytic Metalloenzyme Models. Metal Ion Dependent Site-Selective Acylation of Hydroxyl Groups of Bis-Imidazole Ligands Catalyzed by Zn2+ and Cu2+ in the Reaction with p-Nitrophenyl 2-Pyridinecarboxylate in a Cationic Surfactant Mi
Co-micelles of hexadecyltrimethylammonium bromide and a lipophilic bis-imidazole ligand, 1-dodecyl-4-hydroxymethyl-α-(1-dodecyl-2-imidazolyl)-2-imidazolemethanol (4) having two primary and secondary hydroxyl groups, together with the co-micelles of the re
A MICELLAR MODEL OF ZINC CONTAINING METALLOENZYMES
N-Dodecyl-2-hydroxymethylimidazole (1) was found to be unusually active in the transesterification toward p-nitrophenyl picolinate (4), when the reaction wasd carried out in the presence of CTABr micelle and zinc ion.