1.Answer the following question related to leaving group ability. ______________
ID: 961129 • Letter: 1
Question
1.Answer the following question related to leaving group ability. _______________ is a better leaving group than hydroxide because of ________________.
A. Acetate; resonance delocalization stabilizing the anion
B. Methoxide; resonance delocalization stabilizing the anion
C. Methoxide; inductive electron-donating effects stabilizing the anion
D. Amide ion (–NH2); nitrogen is less electronegative, making it more stable than the oxygen anion.
E. Acetate; inductive electron-withdrawing effects stabilizing the anion
2. Which of the following is NOT a good method to synthesize an alcohol?
E.React a primary alkyl bromide with NaOH in DMF
3. Which of the following reactions does NOT involve formation of a carbocation intermediate in the mechanism?
A. Reaction of 2-methylbut-2-ene with HBr
B. Reaction of 2,2-dimethyl-1-propanol with HBr
C. Reaction of 2-methyl-2-propanol with HBr
D. Reaction of 2-butanol with H2SO4
E. Reaction of 1-butanol with HBr
A. Acetate; resonance delocalization stabilizing the anion
B. Methoxide; resonance delocalization stabilizing the anion
C. Methoxide; inductive electron-donating effects stabilizing the anion
D. Amide ion (–NH2); nitrogen is less electronegative, making it more stable than the oxygen anion.
E. Acetate; inductive electron-withdrawing effects stabilizing the anion
2. Which of the following is NOT a good method to synthesize an alcohol?
A. React a tertiary alkyl bromide with H2O B. React an alkene with H2SO4 and H2O C.React an alkene with H2SO4 and methanol D.React an alkene with BH3 followed by H2O2, NaOH and waterE.React a primary alkyl bromide with NaOH in DMF
3. Which of the following reactions does NOT involve formation of a carbocation intermediate in the mechanism?
A. Reaction of 2-methylbut-2-ene with HBr
B. Reaction of 2,2-dimethyl-1-propanol with HBr
C. Reaction of 2-methyl-2-propanol with HBr
D. Reaction of 2-butanol with H2SO4
E. Reaction of 1-butanol with HBr
Explanation / Answer
1. A. Acetate; resonance delocalization stabilizing the anion
2. C.React an alkene with H2SO4 and methanol
3. E. Reaction of 1-butanol with HBr
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