Read all directions carefully. Answers must be legible to receive credit. 1. For the following reaction CH,CH,0 a. Give

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Read All Directions Carefully Answers Must Be Legible To Receive Credit 1 For The Following Reaction Ch Ch 0 A Give 1 (29.35 KiB) Viewed 21 times

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Read all directions carefully. Answers must be legible to receive credit. 1. For the following reaction CH,CH,0 a. Give the mechanism for the reaction. (10 points) i in b. Give the major product of the reaction above. (4 points) c. Is the base that is added a catalyst? Explain. (3 points) d. Why isn't this reaction reversible? (2 points) c. Draw the Aldol side product that would also be formed (reaction of two of the ketones). (4 points) f. Suggest a laboratory procedure that will nearly eliminate formation of the aldol product from the reaction mixture. (3 points) g.Draw the energy diagram for the mechanism you drew in. Be sure to label the parts. (5 points)
2. Why is 2,4-hexanedione more acidic than 3-hexanone? Explain (use structures and resonance of the conjugate bases in your explanation). (15 points) Give an example of how this could be useful synthetically. (Draw structures and reactions - no mechanisms). 3. Put the following molecules in order from most basic (1) to least basic (3). You must explain your order. Also estimate the pk of the conjugate acid. (6 points) yo Using chemical reactions not used in this exam (at least one step must be from the new material - CA 25, 26, 27), give a 4-step synthesis problem! No mechanisms are required, just give each step with products. It must follow the rules of each reaction and by viable. Double check that there is not an easier way to make your final molecule from the starting material you chose! (15 points)
5. The following energy diagram is of reactions of CH.MgBr with 2-butanone and butanal (no acid has been added, this is the first step only). (12 points) a Draw the mechanism of each reaction. I. CH_MgBr with 2-butanone 1. CH_MgBr with butanal b. Which line goes with which reaction? Convince me with an excellent explanation Products Potential Energy Activation Energies Heat of Reaction Reactants Progress of Reaction (Time) 3
6. Complete cach problem below. (21 points) Give product from each stop 2. HP Give missing reagents and product from each stop you add NH Only omine product Give product from each stop 1. Noet 2 OE: 3.H,09 4 Heat