Synthesis of 4?4?(5?)-dibenzo-18-crown-6-disulfonic acid disalsolidinide, disalsolinide, and dianabasinide

Separation of lead-212 from natural thorium solution utilizing novel sulfonamide dibenzo-18-crown-6

“…This distinction can be attributed to the presence of two passivated benzene rings in DB18C6, which donated electrons to the crown ether ring, consequently weakening the chelation interaction with metal ions. 45 Furthermore, the graph demonstrates a mere 10% difference in extraction efficiency between DSADB18C6 and DtBuDC18C6. Despite the benzene groups undergoing passivation in DSADB18C6, the introduction of SvO moieties through sulfonation greatly enhanced the chelation of crown ether affinity for metal ions.…”