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On the catalytic activation of water-soluble NHC-Au(I) complexes by sonication and microwave irradiation: A comparative assessment
Journal of Organometallic Chemistry ( IF 2.1 ) Pub Date : 2020-07-21 , DOI: 10.1016/j.jorganchem.2020.121452
Gabriela A. Fernández , María A. Schiel , Gustavo F. Silbestri

Within the realm of sustainable chemistry and increasing demand for eco-compatible methods, this article describes our attempts to activate some water-soluble N-heterocyclic carbene (NHC)-based gold(I) complexes under two well-known and safe irradiation protocols: microwaves (MW) and ultrasound (US). A textbook reaction, alkyne hydration, was chosen to assess the performance of such activation protocols and their influence on the catalyst's ability to drive the reaction to completion. Reactions can easily be conducted in pure water or aqueous methanol (1:1). We show that sonication significantly enhances this transformation affording the product in higher yields and shorter reaction times than non-assisted reactions in water, while MW energy gives the desire product in quantitative yield in water:methanol after just 1 min.



中文翻译:

超声和微波辐射催化活化水溶性NHC-Au(I)配合物的比较评估

在可持续化学领域和对生态兼容方法的日益增长的需求中,本文介绍了我们激活某些水溶性氮的尝试。-基于杂环卡宾(NHC)的金(I)络合物在两种众所周知且安全的辐照方案下:微波(MW)和超声(US)。选择教科书反应炔烃水合来评估此类活化方案的性能及其对催化剂驱动反应完成的能力的影响。反应可以在纯水或甲醇水溶液(1:1)中轻松进行。我们表明,超声处理显着增强了这种转化,与无辅助反应的水相比,提供了更高的收率和更短的反应时间,而MW能量仅在1分钟后就在水:甲醇中提供了所需的定量收率的产物。

更新日期:2020-07-24
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