Alkyltriflate-Triggered Annulation of Aryl­isothio­cyanates and Alkynes Leading to Multiply Substituted Quinolines through Domino Electrophilic Activation

The reaction of arylisothiocyanate, alkyltriflate, and alkynes leads to variously substituted quinolines in high yields. The reaction undergoes alkyltriflate-triggered domino electrophilic activation and avoids the use of a transition-metal catalyst. A variety of functional groups are tolerated in the quinoline ring.