“…16 With a catalytic amount of AlCl 3 , 2b was also afforded by treatment of 1 with bromine for 3 h at room temperature in 89% yield. 17 Further functionalization of the bridgehead positions in 1,1 0biadamantyl scaffold, generally speaking, becomes more difficult with increasing substituents attached to the other bridgehead positions. 18,19 Inspired by the pioneering works of Teager 17 and Reinhardt, 16 we envisioned that by proper choices of Lewis acid catalysts and severity of conditions, six bromines can be introduced, all at the available bridgehead positions.…”