| Abstract |
Three known multinuclear Zn(II)-arylhydrazone complexes, [Zn\(CH3)(2)SO2\(H2O)(L-1)] (1), [Zn-2(CH3OH)(2)(mu-L-2)(2)] (2) and [Zn-4 (mu-OH)(2)(1 kappa O:2 kappa O-HL3)(4)(kappa O-HL3)(2)(H2O)(4)] (3) were prepared upon reaction of ZnCl2 or Zn(CH3COO)(2)center dot 2H(2)O with 3-(2-(2-hydroxy-4-nitrophenyl) hydrazineylidene) pentane-2,4-dione (H2L1), 3-(2-(2-hydroxyphenyl)hydrazineylidene)pentane-2,4-dione (H2L2) and 2-(2-(2,4-dioxopentan-3-ylidene)hydrazineyl)benzoic acid (H2L3), respectively, in methanol solution. Compounds 1-3 were tested as catalysts for the cyanosilylation reaction of a diversity of both aliphatic and aromatic aldehydes with trimethylsilyl cyanide yielding the corresponding cyanohydrin trimethylsilyl ethers in high yields (72-98\%) in methanol and at room temperature. (C) 2020 Elsevier B.V. All rights reserved. |
