Biomimetic regioselective and high-yielding Cu(<scp>i</scp>)-catalyzed dimerization of sinapate esters in green solvent Cyrene™: towards sustainable antioxidant and anti-UV ingredients
作者:Matthieu M. Mention、Amandine L. Flourat、Cédric Peyrot、Florent Allais
DOI:10.1039/d0gc00122h
日期:——
work aimed at designing an industrially relevant sustainable synthetic pathway allowing their selective β–β′ dimerization to enhance their properties with a view to use them in commercial applications such as functional additives for cosmetics, plastics and food/feed. A copper(I)-catalyzed procedure involving pyridine and O2 from air was developed and greened up using the REACH-compliant bio-based
天然的芥子酸及其酯是抗紫外线和抗自由基化学物质。这项工作旨在设计一种工业相关的可持续合成途径,使它们的选择性β-β'二聚化以增强其性能,以期将其用于商业用途,例如化妆品,塑料和食品/饲料的功能性添加剂。涉及吡啶和O 2的铜(I)催化过程使用符合REACH要求的生物基溶剂Cyrene™开发并绿色化空气。通过实验设计进一步优化后,这种可持续的合成工艺已成功应用于各种芥子酸酯,并已在多克规模上得到验证。相对于商业抗氧化剂,将所得的β-β'二棕榈酸酯的抗自由基活性进行了基准测试,而将其紫外线吸收率与植物中发现的天然抗紫外线化合物辛那普酰苹果酸和广泛使用的商业防晒成分Octinoxate™的抗紫外线活性进行了比较。 。结果表明,这些二聚体是更好的自由基清除剂,不仅表现出更好的紫外线吸收率,而且覆盖了UV-A和UV-B区域。