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- 27. Draw a circle around the compound that reacts most rapidly with NaN3 in DMSO and draw a rectangle around the molecule that reacts most slowly with NaN3 in DMSO. Br Br Br 28. Draw a circle around the compound that reacts most rapidly with NaOAc in HOAC and draw a rectangle around the molecule that reacts most slowly with NaOAc in HOAC. Br Br Br ***||1. Consider the following reaction: HBr 0°C He a) Which product is the more stable product, and why? Br Br b) Draw the transition states for the step leading to each of the products. Which transition state is lower in energy, and why?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). H Br H₂C Br b) What makes the formation of the previous product spontaneous (ie. why is the product more stable than the reactant)?
- Consider the following two-step reaction: a.How many bonds are broken and formed in Step [1]? Would you predict the ΔHo of Step [1] to be positive or negative? b.How many bonds are broken and formed in Step [2]? Would you predict the ΔHo of Step [2] to be positive or negative? c.Which step is rate-determining? d.Draw the structure for the transition state in both steps of the mechanism. e.If ΔHooverall is negative for this two-step reaction, draw an energy diagram illustrating all of the information in parts (a)–(d).3. Draw an energy diagram and a structure for the transition state for the following reaction Br KCN CN + KBrWhich elimination reaction in each pair is faster? OOH OOH HO, A. H2O CI DMSO CI pok int rences CI CI H2O H20 В. CI CI OH HO, HO, Reset C.
- Consider the following SN2 reaction, C NaOCH₂ CH₂OH OCH what would happen if the concentration of NaOCH 3 was doubled? Elimination would become the major reaction. The rate of reaction would be halved. The rate of reaction would stay the same. The rate of reaction would double.9. Complete each of Chomical Reactions. H E-C-H +0₂- -C-C-C-C-CH +0₂ 1 i H H H H the Following # H b. x-C-C=C-C-C-H + Cl₂ →Which of the following is considered an initiation reaction: O CH₂ CH₂ H-H -CH₂ -CH₂ H₂C-CH₂ H-CH₂ H₂C-CH₂ H. -CH3 H₂C-H H-CH₂ -CH₂ -CH₂
- Reaction ✓ A B Reaction A: Reaction B: Save for Later is the faster reaction of the two shown. Br2 hv Cl2 hv Br .CIDraw an energy diagram for each reaction. Label the axes, the starting material, product, transition state, ?H°, and Ea.a. a concerted reaction with ?H° = –80 kJ/mol and Ea = 16 kJ/molb. a two-step reaction, A -> B ->C, in which the relative energy of the compounds is A < C < B, and the step A -> B is rate-determining.Consider the two energy diagrams given below. B Reaction progress Reaction progress Which of the following is correct with respect to these diagrams? O A could represent an E2 reaction B could represent an E1 reaction A could represent an E1cb reaction O A could represent and E1 reaction B could represent an E1cb reaction Energy