6. Suggest a reasonable mechanism for the reaction below. You must draw the curved arrows below the equation given! (I pt) Hint: notice that this is an intramolecular cyclization.
7a. provide the major organic product for each box (via each transformation): (1.5 pts, 0.25 pt)
7b. Enamines can serve as enolate surrogate in reactions at the -carbon. In this reaction, the structure of the enamine, its zwitterion (processing both + and - charges), and its neutral tautomer are shown. Fill the boxes by providing the requested structures. (0.25 pt)