Coordination of benzene by a tungsten complex can minimize the formation of oligomeric aromatic products in Friedel-Crafts Arylation. Here the authors show that coordinating benzene to tungsten through two carbons (dihapto-coordination) enables a rarely observed double protonation of the bound benzene, allowing its subsequent coupling to a second arene without the need of a precious metal or Lewis acid catalyst.
- Justin T. Weatherford-Pratt
- Jacob A. Smith
- W. Dean Harman
