試題詳解

24. Which of the following is correct in order of decreasing nucleophilicity toward methyl iodide in methanol?
(A) CH₃O^- > CH₃S^- > CN^- > Br^-
(B) CH₃O^- > CN^- > CH₃S^- > Br^-
(C) CN^- > CH₃O^- > CH₃S^- > Br^-
(D) CH₃S^- > Br^- > CH₃O^- > CN^-
(E) CH₃S^- > CN^- > CH₃O^- > Br^-