One method for the synthesis of 9,9-spirobifluorenes
Chapter 19, Problem 19.92(choose chapter or problem)
One method for the synthesis of 9,9-spirobifluorenes (rigid compounds with application to molecular electronics and light-emitting materials) involves protonation of ketone 1 with a catalytic amount of aqueous acid. Protonation of the CRO group generates an extremely powerful electrophile that facilitates a spontaneous cyclization (Org. Lett. 2004, 6, 23812383). Propose a plausible mechanism for this transformation. Br O Br OMe OMe H3O+ Br OMe Br MeO
Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.
Becoming a subscriber
Or look for another answer