Course Solutions Uncategorized (Solved) : Iii Two Unknowns X Y Molecular Formula C4hso Give Following Results Four Chemical Tests Pr Q33200709 . . . .

(Solved) : Iii Two Unknowns X Y Molecular Formula C4hso Give Following Results Four Chemical Tests Pr Q33200709 . . . .

 

organic chemistry 3 and 4

III. Two unknowns, X and Y, both having the molecular formula C4HsO, give the following results with four chemical tests. Propose structures for X and Y consistent with this information. (6%) Bromine Na meta Chromic acid Lucas reagent Compound X decolorizes Bubbles Orange to greenNo reaction Compound Y No reaction No reaction No reaction No reaction 國立清華大學命題紙 98學年度 生醫工程與環境科學系 系(所) 乙(環境分子科學) 組碩士班入學考試 科目 有機化學與物理化學 科目代碼 2404 共一3.一頁第一3-一頁,請在【答案卷卡】內作答 IV. (a) Optically active 2-bromobutane undergoes racemization on treatment with a solution of KBr. Please (b) In contrast, optically active 2-butanol does not racemize on treatment with a solution of KOH (c) Optically active 2-butanol can racemize in dilute acid. Please propose a mechanism for this show your reaction. (2%) Explain why a reaction like that in part (a) does not occur. (2%) reaction. (4%)

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