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首頁 > 研究所、轉學考(插大)-有機化學 > 109年 - 109 國立台灣大學_碩士班招生考試：有機化學(A)#90650 >

5. Which of the following compounds has the highest reactivity in the Diels-Alder reaction with benzoquinone? (A) (B) (C) (D) (E)

其他申論題

1. Which of the following carbons has the weakest C-H bond?(A) (B) (C) (D) (E)

2. Which of the following carbons has the largest 13C NMR chemical shift?(A) (B) (C) (D) (E)

3. Which of the following compounds has the lowest pKa value? (A) acetone (B) phenoi (C) toluene (D) DMF (E) chloroform

4. Which of the following compounds would release the largest amount of heat per mole from hydrogenation reaction? (A) (B) (C) (D) (E)

6. What type of reaction mechanism would dominate the following reaction? (A)SN1 (B)SN2 (C)E1 (D)E2 (E)E1cb

7. Which of the following compounds could not function as a nucleophile? (A) NaOH (B) NaCN (C) NaBH4 (D) NaCl (E) NaH

8. Which of the following is the best set of reagents to carry out the transformation shown below? (A) 1) NaOH; 2) EtBr; 3) H2, Pt (B) 1) NaNH2; 2) EtBr; 3) H2, Lindlar's catalyst (C) 1) EtMgBr; 2) Na, NH3(liq) (D) 1) O3; 2) Et2S; 3) H2, Lindlar's catalyst (E) 1) NaNH2; 2) EtBr; 3) Na, NH3(liq)

9. Which of the following types of reactions could be either acid-catalyzed or base-catalyzed? (A) acetal formation (B) hemiacetal formation (C) enamine formation(D)imine formation (E) ether hydrolysis

10. What is the major final organic product of the following sequential reactions? (xs = excess) (A) (B) (C) (D) (E)

11. What is the major final organic product of the following reactions? (A) (B) (C) (D) (E)

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