1. The problem statement, all variables and given/known data Write a detailed mechanism for the following reaction: Attached picture 2. Relevant equations N/A 3. The attempt at a solution Okay, I know this is PART of the mechanism for the oxidation of a glycol by periodic acid which causes cleavage of the C-C bond between the glycol and forms 2 carbonyl groups. The thing is the cyclic periodate that is formed is only an intermediate , and I need to figure out a mechanism for that 1 Step. I have tried thinking about turning one of the -OH groups on the glycol into H2O to start a SN reaction, but it doesn't seem to work out. What I think I do know is that the oxidation state of the iodine atom is preserved in the cyclic periodate and that the periodic acid is the molecule that wants electrons. Other than that, I don't have a clue about how the mechanism works to form the cyclic periodate.