Visible Light-Driven Synthesis of Amine–Sulfonate Salt Derivatives: A Step towards Green Approach

Abstract

In this work, a novel strategy for the straightforward visible-light-driven synthesis of biologically active, industrially important, and stable amine–sulfonate salts have been reported from p-Toluenesulfonic acid and amines, which provide extremely high yield without side product formation. The reaction was performed without catalyst under visible light irradiation and had an excellent functional group tolerance. The structure of the prepared compounds were confirmed through 1H NMR, 13C NMR, and Mass spectroscopic studies, and similarly, the molecular structure of compound 3b was established through single-crystal XRD-analysis. The advantages of this method meet the requirements of sustainable and green synthetic chemistry, and it provides a direct way to create valuable amine-sulfonate salt. © 2022