Robuta

https://pubs.rsc.org/en/Content/ArticleLanding/2009/GC/b916764c Silica-supported aminopyridinium halides for catalytic transformations of epoxides to cyclic... Silica-supported 4-pyrrolidinopyridinium iodide was prepared by quaternization of 4-pyrrolidinopyridine with silica-supported alkyl iodide. The... silicasupportedhalides