• Free-radical initiator. Xanthates undergo hydrodesulfurization with the reagent in refluxing isopropanol: Tetrahedron Lett., 37, 5877 (1996). The reaction has been extended to the cyclization of 3-aroylpropyl xanthates to tetralones: Tetrahedron Lett., 38, 1759 (1997); 1,2,3,4-tetrahydroisoquinolin-1-ones can be prepared similarly: Tetrahedron Lett., 39, 7295 (1998).