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Multinuclear Zn(II)-arylhydrazone complexes as catalysts for cyanosilylation of aldehydes
Journal of Organometallic Chemistry ( IF 2.3 ) Pub Date : 2020-02-10 , DOI: 10.1016/j.jorganchem.2020.121171
Zhen Ma , Vusala A. Aliyeva , Dilgam B. Tagiev , Fedor I. Zubkov , Firudin I. Guseinov , Kamran T. Mahmudov , Armando J.L. Pombeiro

Three known multinuclear Zn(II)-arylhydrazone complexes, [Zn{(CH3)2SO}(H2O)(L1)] (1), [Zn2(CH3OH)2(μ-L2)2] (2) and [Zn4(μ-OH)2(1κO:2κO-HL3)4O-HL3)2(H2O)4] (3) were prepared upon reaction of ZnCl2 or Zn(CH3COO)2·2H2O 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 13 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.



中文翻译:

多核锌(II)-芳基zone配合物作为醛氰基硅烷化的催化剂

三种已知的多核Zn(II)-芳基zone络合物[Zn {(CH 32 SO}(H 2 O)(L 1)](1),[Zn 2(CH 3 OH)2μ- L 22 ](2)并且,[Zn 4μ -OH)2(1κ ø:2κ ö -HL 34(κ ø -HL 32(H 2 O)4 ](3分别在氯化锌的反应制得)2或Zn(CH 3 COO)2 ·2H 2 O与3-(2-(2-羟基-4-硝基苯基)肼基)戊烷-2,4-二酮(H 2 L 1),3-(2-( 2-羟基苯基)肼基亚基)戊烷-2,4-二酮(H 2 L 2)和2-(2-(2-(2,4-二氧戊丹-3-亚丙基)肼基)苯甲酸(H 2 L 3)甲醇溶液。化合物1 - 3进行测试作为催化剂用于脂族和芳族醛的多样性与氰化三甲基硅烷,得到高产率(72-98%)在甲醇中并在室温下相应的氰醇三甲基甲硅烷醚的硅氰化反应。

更新日期:2020-02-10
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