of thiazole-2-thiones via an oxidative cascade cyclization strategy is described. The novel protocol involves the simultaneous formation of two C—S bonds and a C═S bond on the structure of enaminones in a single operation through a cascade of C(sp2)—H/C(sp3)—Hbond sulfurations and C(sp3)–H bond thiocarbonylation. This transformation allows for the efficient synthesis of thiazole-2-thiones with broad
A variety of functionalized N-alkylated carbazolones were prepared via N-alkylation of 3-(arylamino)cyclohex-2-enones followed by an intramolecular oxidative coupling mediated by Pd(OAc)2 under an oxygen atmosphere. This approach adopts an inverted sequence, consisting of the conventional annulation and subsequent N-alkylation.