Draw the product of the below reaction, a mechanism and a Molecular Orbit nergy diagram for it. Indicate which levels are used for the reaction. MeO₂C hv (light)
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- The accepted mechanism for a rearrangement reaction is shown below. "Q Ph (1) (ii) Ph Ph HO™ fast Ph Ph HO O™ slow Ph aufae .Ar² LOH HO™ fast Draw a curly arrow mechanism for this transformation. Sketch an energy profile for this reaction, showing approximate relative energies for the reactants, intermediates, transition states, and products. HQ Ph (iii) When DO™ was used as the reagent, the rate of product formation was same as for HO™. Explain why this result shows that the third step is fast and cannot be rate-determining. Ph (iv) Write the predicted rate equation for this mechanism, and show how it was derived. (v) The starting diketone may have two different aryl groups, as shown below. Propose a ¹³℃ labelling experiment that would allow you to distinguish which of the two aryl groups had migrated in this situation. OH AR²0- Ar¹ C CDraw the mechanism and the energy diagram for the reaction shown below. Include any resonance structures for the intermediates of the reaction. H3O+Predict the product, draw the mechanism, and plot the reaction coordinate diagram for theE1 reaction.
- Provide the mechanism for the following reaction (1) PhMgBr (2 equiv) (2) H3O+ workup OH10. practice q 10 Compound Free Energy HO A A reacts with B in the presence of sodium hydride to give C as a major product. NH₂ Ph B ŌSO₂CF3 NaH, THF a) Provide a detailed mechanism for the formation of C and draw it in the box above. ( C b) Draw the reaction coordinate diagram of that reaction. Indicate with an arrow the rate- determining step of the reaction then draw its transition state: Reaction Coordinate c) The reaction rate observed was 5 x 10-2 M.s¹ when the concentrations of A and B were 0.2 M and 0.1 M respectively. Determine the rate of this reaction when the concentration of A and B are now 0.3 M and 0.2 M respectively. Show your work.N(CH2CH3)3 + HNO3 --------> a.) rewrite the reaction using bond-line structure of reagents and products of the reaction b.) supply the curved arrows explaining the mechanism of the reaction
- 2. Provide the mechanism for the reaction illustrated below. Show the relevant intermediate/transition state. Br N2OHConsider the following overall reaction, which will be discussed in Chapter 20. H,C-CEN NH3 HOO H,C Below is a proposed mechanism for this reaction. Use the rules we learned in this chapter to evaluate whether each step in the proposed mechanism is reasonable. For each step that is not reasonable, explain why. :ÖH () H,C-CEN: H3C OH OH (i) + H,C H3C OH OH (ii) H,C H,C OH (iv) + H,O: H,C H,C OH (v) H3C H3C OH H. (vi) :NH, NH. H,C H,CFor the following reaction there are three (3) possible products. Two of the products are expected to be minor and one product is expected to be a major product. Br H₂O Name and draw out the step-by-step mechanisms by which each of the products is formed. Briefly explain why one of the three products is expected to be a major product.
- 5a) Draw the product(s) of the reaction shown below. Additionally, identify the nucleophile, electrophile and leaving group.Write the mechanism of the following bromination reaction and explain the regioselectivity of the bromination reaction. Draw the mechanism, transition state, energy diagram, etc. The same reaction with chlorine is not much regioselective in Q1. Explain the decreased regioselectivity of the following chlorination reaction by comparing the bromination reaction in Q1. Draw the mechanism, transition state, energy diagram, etc.When benzyl bromide is treated separately with KI and CH3OH, the substitution products are different but the reaction rates are about the same. KI Br (a) What does this suggest about the mechanism-is it SN1 or SN2? Explain. (b) Draw the complete mechanism (including curved arrows) for the formation of each product. (c) If the concentration of KI were doubled, what would happen to the rate of the substitution reaction? HOCH3 ?