Unanticipated synthesis of a C3 symmetrical tris-triazine under cyclization conditions of coumarinoyl thioureas with α-halo compounds
作者:Ghulam Shabir、Saba Ashraf、Aamer Saeed、Muhammad Zaffar Hashmi、Tuncer Hökelek、Diana L. Nossa Gonzalez、Reinaldo Pis Diez、Hesham R. El-Seedi、Michael Bolte、Mauricio Federico Erben
DOI:10.1016/j.molstruc.2024.137686
日期:2024.5
by a strong OH···O = C intramolecular hydrogen bond. This form was also clearly observed in solution, with minor contribution of the keto tautomer, the relative contribution between the enol:keto forms is ca. 0.7:0.3. A thorough computational investigation of the conformational space of the triazine under study led to twelve different minima, the all-enol tautomer being the most stable form, in good
在碱性条件下,通过对乙基 (Z)-3-氧代-2-((N-(2-氧代-2H-铬-3-羰基)-N'-苯基氨基甲酰氨基酰基)硫代)丁酸酯衍生物进行三聚化,获得了一种新的高度对称的 1,3,5-三嗪-2,4,6-磺烷二酯。该化合物已通过 FT-IR、拉曼、NMR 和 X 射线衍射分析进行了表征。三乙基 2,2′,2“-((1,3,5-三嗪-2,4,6-三基)三(磺烷二基))三(3-羟基丁酸酯)在具有空间群 R-3 的三角系统中结晶。硫原子位于三嗪环的同一平面上,导致涉及整个 1,3,5-三嗪-2,4,6-三基-三(磺烷二基)核心的平面合成子。此外,杂环芳香族三嗪环有利于π叠层相互作用使晶体结构稳定。Hirshfeld 表面分析用于使用分子表面轮廓和 2D 指纹图直观地分析晶体结构中的分子间相互作用,用于检查分子形状。在晶体中观察到烯醇互变异构形式,受到强 OH···O = C 分子内氢键。在溶液中