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試卷名稱：105年 - 105 學士後西醫：有機化學#78642
年份：105年
科目：學士後西醫-有機化學
73. In order to synthesize the final product shown below, predict when should a protecting group be added and when should it be removed?
(A) The hydroxyl group should be protected before step I and removed after step I
(B) The hydroxyl group should be protected before step I and removed after step II
(C) The hydroxyl group should be protected before step I and removed after step III
(D) The hydroxyl group should be protected before step II and removed after step III
(E) There is no need for a protecting group in this synthesis.
