試題詳解

21. Which pair of reagents would produce the highest yield of (R)-2-ethoxybutane?
(A)sodium (S)-2-butoxide t iodoethane
(B)sodium (R)-2-butoxide + iodoethane
(C) sodium ethoxide + (S)-2-iodobutane
(D)sodium ethoxide + (R)-2-jodobutane
(E)Both B and C would work equally well.