(Solved): 13. (5 points) The Robinson annulation reaction is a Michael reaction followed by an aldol reaction ...

13. (5 points) The Robinson annulation reaction is a Michael reaction followed by an aldol reaction. This combination is commonly used to build fused ring systems in molecules such as steroids. An example of one such reaction is shown below. a. Draw the complete mechanism of A going to D (using B and C). 1) HO- (B) 2) (A) (C) (D) (E) b. Why don't we need to add any reagents to have molecule D go to E? c. What is the structure of the other aldol product that you get from D (precurser to E)?