One‐Pot Catalyst‐Free Direct Sulfenylation of 1‐Aryl Pyrazolones with Aryl Thiols at Room Temperature

Abstract

Abstract A novel strategy for N‐chlorosuccinimide mediated direct sulfenylation of 1‐aryl pyrazolones using aryl thiols has been developed at room temperature. The protocol was found to be simple, efficient and transition metal‐free to afford the target products in good to excellent yields without further purification. The prepared compounds were characterised by 1 H NMR, 13 C NMR and IR spectroscopy. The skeleton of one of the synthesized compounds has been well confirmed by X‐ray single crystal diffraction (XRD) analysis as well as ORTEP diagram.