Abstractmagnified imageThe silver‐catalyzed direct activation of allylic alcohols as electrophilic partners for intramolecular Friedel–Crafts alkylation of arenes is described. Use of silver triflate (AgOTf; 10 mol%) enabled functionalized 1‐vinyl‐1,2,3,4‐tetrahydronaphthalenes and a 4‐vinyl‐1,2,3,4‐tetrahydroisoquinoline to be isolated in good yields with high levels of regiochemistry, under a ligand‐free regime.
Highly Efficient Molybdenum(II)-Catalyzed Intramolecular Allylic Alkylation of Arenes
The Friedel–Crafts-type intramolecular allylic alkylation of simple arenes is performed in the presence of a catalytic amount of [Mo(II) (CO)4Br2]2 (2.5 mol%). The moisture-tolerant protocol provided a mild and direct access to a large library of functionalized 4-vinyl-1,2,3,4-tetrahydronaphthalenes in high yields.