Synthesis of a novel DAB CO-based nanomagnetic catalyst with sulfonic acid tags: application to the synthesis of diverse spiropyrans

摘要

In this paper, sulfonic acid functionalized 1,4-diazabicyclo[2.2.2]octane (DAB CO)-based magnetic nanoparticle Fe3O4 [Fe3O4@SiO2@Pr-DABCO-So(3)H]Cl-2 was synthesized and fully characterized using various techniques. Then the catalyst was examined for the convenient synthesis of spiropyran derivatives, resulting in high reaction yields, short reaction times, and the recovery and reusability of the catalyst.