Synthesis of tetrazoles, triazoles, and imidazolines catalyzed by magnetic silica spheres grafted acid
作者:Ruihang Jiang、Hong-Bin Sun、Shuang Li、Kun Zhan、Junjie Zhou、Lei Liu、Kai Zhang、Qionglin Liang、Zhangpei Chen
DOI:10.1080/00397911.2018.1510007
日期:2018.10.18
tetrazoles, triazoles, and imidazolines. The magnetic silica sphere grafted sulfonic acid (MSS-SO3H) is suitable for the synthesis of 1,2,3-triazole via the cycloaddition of nitroalkene with NaN3, whereas the zinc-modified silica sphere catalyst (MSS-SO3Zn) is more suitable for the synthesis of tetrazoles. The MSS-SO3Zn catalyst also works well for the synthesis of 2-substituted imidazoline via the condensation
摘要 磁分离催化剂用于合成含氮杂环,包括四唑、三唑和咪唑啉。磁性二氧化硅球接枝磺酸(MSS-SO3H)适用于硝基烯烃与NaN3环加成合成1,2,3-三唑,而锌改性二氧化硅球催化剂(MSS-SO3Zn)更适用于四唑类化合物的合成。MSS-SO3Zn 催化剂也适用于通过腈与乙二胺缩合合成 2-取代咪唑啉。MSS-SO3H 和 MSS-SO3Zn 催化剂都可以通过磁铁轻松回收,无需进一步繁琐活化即可重复使用。图形概要