Influence of the aromatic substitutes in the thermal and kinetic behavior of mesoionic compounds of the 1,3-thiazole-5-tiolate system
作者:Soraya Alves de Morais、Crislene Rodrigues da Silva Morais、Petrônio Filgueiras de Athayde Filho、Bruno Freitas Lira、Marcos Antonio feitosa de Souza
DOI:10.1016/j.jallcom.2009.12.002
日期:2010.4
Abstract In this work, three mesoionic compounds of the 1,3-thiazole-5-tiolat system were studied, derived from amino acids of the glycerin through 1,3-dipolar cyclo-addition/reversion reaction. The mesoionic compounds were characterized as: MI-1 (mesoionic 2-(4-chlorophenyl)-3-methyl-4-phenyl-1,3-thiazole-5-tiolat); MI-2 (mesoionic 2-(4-chlorophenyl)-3-methyl-4-(4-isopropylphenyl)-1,3-thiazole-5-tiolat)
摘要 在这项工作中,研究了 1,3-噻唑-5-硫醇酯系统的三种介离子化合物,它们通过 1,3-偶极环加成/回复反应衍生自甘油的氨基酸。介离子化合物的特征为:MI-1(介离子 2-(4-氯苯基)-3-甲基-4-苯基-1,3-噻唑-5-噻吩);MI-2 (mesoionic 2-(4-chlorophenyl)-3-methyl-4-(4-isopropylphenyl)-1,3-thiazole-5-tiolat) 和 MI-3 (Mesoionic 2-(4-clorophenyl)-3 -甲基-4-(甲氧基苯基)-1,3-噻唑-5-硫醇酸酯)。这些化合物通过红外光谱 (IR)、核磁共振 (NMR)、热重 (TG) 和差示扫描量热仪 (DSC) 进行表征。此外,通过非等温热重法对热分解的动力学研究已经实现,展示了这些化合物的动力学和热行为。光谱分析的结果证实了合成的介离子化合物的结构。介离子化合物