Chemistry Africa Pub Date : 2023-05-22 , DOI: 10.1007/s42250-023-00699-z Ankita Raijada , Ajay Rathod , Rizwan Ghumara , Chirag Patel , Ravibhai Bhola , Sabera Bijani , Vicky Jain
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Bisphenols (BPs) are often important for their industrial applications such as coatings, fire retardants, pesticides, plastics, food packaging, epoxy resin, etc. Bisphenol A (BPA) has attracted significant attention in recent decades due to its extensive usage in many sectors; however, due to detrimental effects on human and animal health, BPA has been prohibited in many countries. Hence, it is necessary to alter BPA. Several BPs are thought to be capable of partially replacing BPA in industrial applications. The compound 4,4'- (cyclohexane-1,1-diyl)bis (2,6-dibromophenol) (TBBPZ) is a less known derivative of 4,4'- (cyclohexane-1,1-diyl)diphenol (BPZ) but also very interesting as it has a cyclohexane ring connected with two symmetrical phenols and four bromo bulky groups in ortho position. An instantaneous method for brominating bisphenol Z with potassium tribromide as an efficient brominating agent has been reported, yielding the corresponding TBBPZ in a reaction time of only 7–12 min at ambient temperature in high yields (98%). The compound TBBPZ was synthesized and characterized using IR, 1H NMR, 13C NMR and mass analyses. The density (ρ), viscosity (η), and ultrasonic speed (U), of this TBBPZ compound have been measured at different temperatures and concentrations in 1,4-dioxane (DO), ethyl acetate (EA), and tetrahydrofuran (THF). Volumetric properties, viscometric properties, and acoustical studies have all been investigated using these experimental data. The findings are analyzed in contexts of solute–solute and solute–solvent interactions. This provides an indication of the structure-breaking or structure-making attributes of the studied compound in solutions of 1,4-dioxane, ethyl acetate, and tetrahydrofuran.
Graphical Abstract
中文翻译:
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不同温度下4,4'-(环己烷-1,1-二基)双(2,6-二溴苯酚)在1,4-二恶烷、乙酸乙酯和四氢呋喃中的密度、粘度和声速
双酚 (BP) 对于涂料、阻燃剂、杀虫剂、塑料、食品包装、环氧树脂等工业应用通常很重要。双酚 A (BPA) 由于在许多领域的广泛使用,近几十年来引起了极大的关注; 然而,由于对人类和动物健康的不利影响,BPA 在许多国家已被禁止。因此,有必要改变 BPA。一些 BP 被认为能够在工业应用中部分替代 BPA。化合物4,4'-(cyclohexane-1,1-diyl) bis(2,6-二溴苯酚) (TBBPZ) 是 4,4'-(环己烷-1,1-二基)二苯酚 (BPZ) 的一种鲜为人知的衍生物,但也非常有趣,因为它有一个环己烷环与两个对称的苯酚和邻位的四个溴大基团。已经报道了一种用三溴化钾作为高效溴化剂溴化双酚Z的瞬时方法,在环境温度下仅 7-12 分钟的反应时间内就以高产率 (98%) 产生了相应的 TBBPZ。合成了化合物 TBBPZ,并使用 IR、1 H NMR、13 C NMR 和质谱分析对其进行了表征。密度 ( ρ )、粘度 ( η ) 和超声波速度 ( U),这种 TBBPZ 化合物在不同温度和浓度下在 1,4-二恶烷 (DO)、乙酸乙酯 (EA) 和四氢呋喃 (THF) 中进行了测量。体积特性、粘度特性和声学研究都已使用这些实验数据进行了研究。在溶质-溶质和溶质-溶剂相互作用的背景下分析了这些发现。这表明所研究的化合物在 1,4-二恶烷、乙酸乙酯和四氢呋喃溶液中的结构破坏或结构形成属性。