Semiheterogeneous Purification Protocol for the Removal of Ruthenium Impurities from Olefin Metathesis Reaction Products Using an Isocyanide Scavenger
作者:Grzegorz Szczepaniak、Wojciech Nogaś、Jakub Piątkowski、Anna Ruszczyńska、Ewa Bulska、Karol Grela
DOI:10.1021/acs.oprd.8b00392
日期:2019.5.17
A low-waste, time-economical, and scalable semiheterogeneous purification protocol for the removal of ruthenium residues from olefin metathesis (OM) reactions has been developed. It is based on the non-covalent immobilization of the commercially available isocyanide 1,4-bis(3-isocyanopropyl)piperazine (QA) on unmodified silica gel. The use of the heterogeneous scavenger [email protected]2 synthesized
已经开发了一种低浪费,省时,可扩展的半异构纯化方案,用于从烯烃复分解(OM)反应中去除钌残留物。它基于未改性硅胶上市售异氰酸酯1,4-双(3-异氰丙基)哌嗪(QA)的非共价固定。使用纯化过程中原位合成的异质清除剂[受电子邮件保护] 2已显示出可生产金属杂质通常低于5 ppm的OM产品。此外,新的纯化方案在组织蛋白酶K抑制剂合成的中间体的闭环OM上以克为单位有效,导致生成的产品仅含有0.29 ppm的Ru。最后,质量检查 用在水性介质中,可将金属污染从9977降低到21 ppm。