A formal [4+2] annulation of diamines and prop-2-ynyl sulfonium salts for the synthesis of tetrahydroquinoxalines

A formal [4 + 2] annulation of diamines and prop-2-ynyl sulfonium salts was developed. This strategy enables efficient access to tetrahydroquinoxalines in excellent yields.

Automated summary

A formal [4 + 2] annulation of diamines and prop-2-ynyl sulfonium salts has been developed, providing an efficient access to tetrahydroquinoxalines in excellent yields.