High-Performance Isocyanide Scavengers for Use in Low-Waste Purification of Olefin Metathesis Products
作者:Grzegorz Szczepaniak、Katarzyna Urbaniak、Celina Wierzbicka、Krzysztof Kosiński、Krzysztof Skowerski、Karol Grela
DOI:10.1002/cssc.201500784
日期:2015.12
even with challenging polar products. The performance of these scavengers is compared and contrasted with other known techniques, such as silica gel filtration and the use of self‐scavenging catalysts. As a result, a new hybrid purification method is devised, which gives better results than using either a self‐scavenging catalyst or a scavenger alone. Additionally, isocyanide II is shown to be a deactivating
研究了三种含叔氮原子的异氰化物,用作烯烃复分解反应后处理中的小分子钌清除剂。所提出的化合物是无味的,易于获得,并且在去除金属残留物方面非常有效,有时使金属含量低于0.0015 ppm。即使使用极具挑战性的极性产品,测试中最成功的化合物II的性能也非常好。将这些清除剂的性能与其他已知技术(例如硅胶过滤和使用自清除催化剂)进行了比较和对比。结果,设计了一种新的杂化纯化方法,该方法比单独使用自清除催化剂或单独使用清除剂可获得更好的结果。此外,异氰化物II 被证明是烯烃复分解的减活剂(反应猝灭剂),优于乙基乙烯基醚。