(Solved): 14. (20 pts) (a) Provide a plausible curved arrow mechanism for the reaction below. Be sure to draw ...

14. (20 pts) (a) Provide a plausible curved arrow mechanism for the reaction below. Be sure to draw structures for all key intermediates and major products (organic and inorganic), and show formal charges and electron flow with curved arrows. All curved arrows must begin from either a bonding pair or lone pair of electrons. (b) Identify all the proton transfer steps in the mechanism and provide their mechanistic purposes. Follow the examples in the lecture note.