試題詳解

58. Which of the following statements describes the first step in the mechanism of the aldol condensation?
(A) An alpha hydrogen is abstracted by the base to from an enolate anion.
(B) A nucleophilic base attacks the carbony1 carbon atom.
(C) The carbonyl oxygen is protonated by the base ion.
(D) An alpha hydrogen is abstracted by an acid to the enolate anion.
(E) none of above.