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- 8. Compound (A) rearranges to compound (B) spontaneously. a) Draw the mechanism using curved arrows, that describes how this rearrangement can occur. (Hint: two shifts are required to obtain the product). 3 I. H Br H3C Br mago b) What makes the formation of the previous product spontaneous (ie. why is the product more stable than the reactant)?Give the major organic product(s) of the following reaction. A. H or Gu H B. MeO C. OH CH3SCH 3 ?2. Energy diagrams for two reactions are shown below. Reaction A Reaction B 70 40 - 60 - 20 50 40 - 30 -20- 20 40 10 60 Reaction Coordinate Reaction Coordinate Which reaction happens faster? Justify your choice with data from the graphs. (jow/r) Kaaug
- Choose the best reaction sequence for the reaction below: SO;H 1. Br2, FeBr3; 2. LiCuBu2; 3. H30+ heat; O 1. BuCl, AICI3 2. H3O+ heat O 1. H3O+ Heat 2. BuCl, AlCI3 O 1. Br2, FeBr3; 2. H3O+ heat; 3. LiCuBu2a. Which value corresponds to a negative value of AG°: Keg = 10-2 or Kag = 10? b. In a unimolecular reaction with five times as much starting material as product at equilibrium, what is the value of Keg? Is AG° positive or negative? c. Which value coresponds to a larger Keg: AG° = -8 kJ/mol or AG° = 20 kJ/mol?The reactants and products for a chemical reaction are shown below. Which arrow pushing mechanism (A-E) would lead to the product that is shown? OE C OD B OA HO A. B. C. D. E. H-O: H-O: H- -H® H-O: 0 H-O: IOH OH + HO
- 21. CH3CH=CH2 – CH3CH2CH3 What reactants (and catalysts) are needed to make the reaction above occur? a. heat, pressure Ob. HCI с. Н20, Н2SO4 Od. H2, PtFrom the reaction energy diagram shown here, match the features on the diagram with their definitions. E A X Y wm C B ◄ A reactants products intermediates transition states A Reaction Coordinate A. X, Y, Z B. C, D C. A D. D E. A, D F. A, B G.B H.C 1. B, C N DWhich is most reactive in Sy2 reaction conditions? CH3I a b. b. Oc e d.
- 5. Using reaction mechanisms, explain the outcome of each of the following reactions. H Br OH H,0 a. H3C-C-C-CH3 H3C-C-CH,CH3 CH3H CH3 Br H. H. CH3 (CH,),CO K (CH,),COH heat b. C C NOT C C CH3 H,C C-CH3 H,C CH3 H. CH3 H3C H.Br a Br Br Br NaOCH3 Br NaOH NaN3 DMSO, heat NaOCH3 H₂O heat Mechanism OA. SN2 OB. SN1 OC. E1 OD. E2 Mechanism OA. SN2 OB. SN1 O C. E1 O D. E2 Mechanism OA. SN2 OB. SN1 O C. E1 OD. E2 Mechanism OA. SN2 OB. SN1 O C. E1 OD. E2 Mechanism OA. SN2 B. SN1 C. E1 D. E2Which compound or compounds dominate the product mixtures of the reaction shown? SO/H2SO4 (fuming) CI. CI CI. B. SOH 2229 SO3H CI. C Compound B Compounds A and D Compounds A and C Compounds C and D