5) For the following reaction, provide the expected mechanism leading to the major substitution product. Please show all intermediates and use arrows to show the movement of electrons (you do not need to show transition states). (1 pt) CH3OH 25 °C Br
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- 10) Consider the following alkene hydration reaction. он H2SO, H20 Given that the reaction is endergonic by 10 kcal/mol, complete the following. (a) Draw the intermediate(s) formed in the mechanistic pathway to the major product in the indicated space below. If there are multiple intermediates label them 1, 2, 3, 4, etc. (b) Sketch a reaction-energy profile for this reaction and clearly label staring material, product, intermediate(s), transition state(s), AG" and AG (of the rate determining step) on your plot. Progress of the reaction Draw and Label Intermediate(s) Below: Potential energyWhen 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 ?In the presence of light or heat, diazomethane (CH,N2) creates a carbene, which then adds to an alkene to make a cyclopropane. In the boxes below. draw the mechanism arrows for the reaction. H INEN: INE N:
- The following reaction can be described by a THREE step mechanism. A drawing of the energy diagram for this reaction is shown below. OH H, SO4 В A Reaction coordinate (i) Write out the three steps in this mechanism. For each step, draw structures for the reactants and products and curved arrows to show bonds formed and bonds broken. (ii) Indicate which of the drawings in your mechanism corresponds to points A, B and C on the energy diagram. Draw the structure of the MAJOR product in the following reaction and an arrow pushing reaction mechanism to showhow the product is formed. H;O+ Potential energyProvide the product(s) and draw a step-by-step mechanism for the reaction shown below. Make sure to draw each individual step and use the correct arrows properly!2. Provide the mechanism for the reaction illustrated below. Show the relevant intermediate/transition state. Br N2OH
- Propene reacts with hydrogen bromide to form two isomers, the major product being, 2- bromopropane. 1(c) Draw the mechanism of the reaction of hydrogen bromide with propene to form 1- bromopropane and 2-bromopropane, showing the structure of both intermediates. (i) (ii) Explain why 2-bromopropane is the major product.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 reaction4) Draw the complete electron-pushing arrow mechanism for the following reductions. Explain, using resonance contributors, the regiochemistry that results in each case. ỌMe Na, MeOH ? NH3 CHO Na, MeOH ? NH3
- b) Identify A and B and provide mechanism of the reaction. NH2 HONO heat A `CO2H H;CO,CFor each reaction, draw the complete mechanism and the major organic product(s), paying attention to stereochemistry. (a) (b) OH LOH (еxcess) ? ? CH,Cl2 CH2CI2Answer the questions below with reference to the reaction shown here: Meo. `OH 2 Meo AICI3 (a) The reaction involves the initial formation of an "acylium ion" from 2: draw the mechanism for the formation of this ion. (b) Draw the structure of the intermediate formed when the acylium ion reacts with compound 1, and then show by means of curved arrows how this intermediate is transformed to the final product 3. (You do not need to show all the resonance forms of the intermediate.) Explain why the substitution takes place ortho to the OMe (c) substituent and not ortho to the methyl substituent.