7. Substitution Reactions

Which of the following correctly ranks the leaving groups from worst to best?

Which of the following is a good nucleophile and a strong base?

Which of the following molecules contains a good leaving group?

Which of the following is the best leaving group in a nucleophilic substitution reaction?

Which member in each pair in [PROBLEM 9-68] is a better leaving group?

e. I⁻ or Br⁻

f. Cl⁻ or Br⁻

Based on your answer to Assessment 12.8, which bases would you expect to be good leaving groups?

Formation of the carbocation should be fastest for which leaving group?

(a)