Domino Aryne Precursor: Efficient Construction of 2,4-Disubstituted Benzothiazoles

An aryne precursor with a potential to perform domino aryne chemistry was proposed and synthesized. The reaction of this reagent with benzothioamide derivatives could afford 2,4-disubstituted benzothiazole with sequential incorporation of C–S, C–N, and C–C bonds on the consecutive three positions of the aryne precursor.