AlCl3‐Catalyzed Synthesis of Triazolo[5,1‐b]thiazines

AlCl3‐Catalyzed oxidative cyclization of thiosemicarbazones / triazolothiones with propargylic alcohols is achieved to afford a diverse set of triazolothiazines in good yields. Triazolothiazines were synthesized in a shorter duration at room temperature under an open‐air environment with atom economical approach. AlCl3‐Catalyzed oxidative cyclization of thiosemicarbazones / triazolothiones with propargylic alcohols is achieved by providing a diverse set of triazolothiazines in good yields. Triazolothiazines were synthesized in a shorter duration at room temperature under an open‐air environment with atom economical approach.