20.What would be the organic product of the following reaction? CH:CO2 K++ H Br ?KBr DCHs B) HCD 9 HC-C-0、H (racemie)DCH D)all of the above E)none of the above Ans:A 21.2 substitution at seco condary halidesandsulfismlice by competing n an tion wi menthyl mide? (SN2) 'Nu )CH;ONa B)CH;CO2Na C)(CH3)N D)(CH3)COK E) Ans: Page 10 Page 10 20. What would be the organic product of the following reaction? C CH3 D H Br CH3CO2 - K+ + ? + KBr A) C CH3 D C O H O H3C B) C D H3C C O H O H3C C) C D CH3 C O H O H3C (racemic) D) all of the above E) none of the above Ans: A 21. SN2 substitution at secondary halides and sulfonates is often complicated by competing E2 elimination. Which of the nucleophiles below would you choose to obtain the highest yield in an SN2 reaction with menthyl bromide? Br Nu Nu (SN2) A) CH3ONa B) CH3CO2Na C) (CH3)3N D) (CH3)3COK E) C6H5SNa Ans: E