Question

7. Under the following conditions, three products are formed in this reaction. OH H2O a. Draw the mechanism that leads to the product that is the least likely to form in the space below. (7pts) b. In the space below, explain why that product is the most likely to form. You should be able to justify your answer. (4pts)

Answer 1

a) 5 member ring formation is more favourable than 7 member ring. So 7 member ring is the least likely to be formed.

b) By abstracting alpha H next to keto and aldehyde 5 member ring is formed. But abstraction of aldehydic alpha H is more easier than abstracting alpha H of keto. So the last product is major which is formed by abstraction of aldehydic alpha H.

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