| Abstract |
The new mixed ligand copper(II) complexes [Cu(HL)(H2O)(A)]center dot 2H(2)O (1, NaH2L = sodium (Z)-2-(2-(1,3-dioxo-1-(phenylamino)butan-2-ylidene)hydrazinyl)benzenesul fonate, A = dimethylsulfoxide, [Cu(HL)(H2O)(B)] (2, B = 1,3,4-thiadiazol-2-amine), [Cu(HL)(H2O)(Y)]center dot 1/2CH(3)OH (3, C = hexamethylenetetramine) and [Cu(HR)(2)(H2O)(2)](H2L)(2) (4, HR = methyl picolinimidate derived from 2-cyanopyridine) were synthesized and characterized by IR and ESI-MS spectroscopies, elemental and X-ray crystal structural analyses. These compounds act as homogenous catalysts for the cyanosilylation reaction of a variety of both aromatic and aliphatic aldehydes with trimethylsilyl cyanide affording the corresponding cyanohydrin trimethylsilyl ethers in high yields (up to 85-99 \%) in methanol and at room temperature. (C) 2017 Elsevier B.V. All rights reserved. |
