Synthesis, spectral and structural characterization of cobalt(III) dithiocarbamato complexes: Catalytic application for the solvent free enamination reaction
作者:Pooja Bharati、A. Bharti、P. Nath、M.K. Bharty、R.J. Butcher、N.K. Singh
DOI:10.1016/j.poly.2015.10.007
日期:2015.12
using 1–2 mol% of the above cobalt(III) complexes as catalysts and these have been characterized by NMR, GC–MS and X-ray crystallography. Complexes 1, 2 and 3 are stabilized by intermolecular C–H⋯S interactions, leading to the formation of supramolecular architectures. Thermogravimetric analysis of complexes 1 and 2 have been investigated by TG-DTA, which indicate that cobalt sulfide is formed as the
一些新的钴(III)配合物[Co(mpcdt)3 ](1),[Co(ppcdt)3 ](2)和[Co(mppcdt)3 ]·0.25CHCl的合成,光谱,结构和催化性能参照图3(3),已经描述了衍生自4-甲基哌嗪-1-碳二硫酸酯(mpcdt),4-苯基哌嗪-1-碳二硫酸酯(ppcdt)和4-(2-甲氧基苯基)哌嗪-1-碳二硫代酸酯(mppcdt)。使用1–2 mol%的上述钴(III)配合物,通过β-酮酸酯和1,3-二酮与脂肪族和芳香族胺的反应,可以得到约90%的产率的一系列β-烯胺酯和β-烯酮。催化剂,并已通过NMR,GC-MS和X射线晶体学进行了表征。复合体1,2和3是通过分子间C-H⋯小号相互作用来稳定,导致超分子结构的形成。通过TG-DTA研究了配合物1和2的热重分析,结果表明形成了硫化钴作为最终产物。