未分類

34. 下列化合物有接近的分子量 (molecular weight)，請依照沸點 (boiling point) 由低到高排列。 (A) Ⅰ<Ⅱ<Ⅲ<Ⅳ (B) Ⅳ<Ⅱ<

29. (1S,2S)-1,2-dibromo-1,2-diphenylethane 進行 E2 反應所得的主要產物為何？(A) (Z)-1-bromo-1,2-diphenylethylene (B

30. 下列試劑何者不適合用來進行下列的反應？ (A) KOtBu (B) NaNH2 (C) CH3MgBr (D) 以上都適合

2. A coenzyme frequently encountered in transamination reactions is(A) Tetrahydrofolate (B) Pyridoxa

3. Which one of the following structures represents a different compound from the other three?  (A)

35. 薄荷酮(carvone)是薄荷精油中的主成份，其結構如下。請問下列敘述何者錯誤？ (A) 薄荷酮與甲基鋰 (MeLi) 反應生成的化合物甲，在紅外線光譜 (Infrared spectrum)

31. 下列試劑何者最適合用來進行下列的反應？ (A) mCPBA, CH2Cl2 (B) 1. Br2, H2O；2. KOH, H2O (C) tBuOOH, KOH (D) 以上皆可

4. Which of the standard amino acids is achiral?(A) Lysine (B) Proline (C) Valine (D) Alanine (E) Gl

5. Which of the following Newman projections does not represent 2-methylhexane?    (A) 1 (B) 2 (C) 3

36. 下列酯類化合物與氫氧化鈉 (NaOH) 進行皂化反應 (saponification)，反應性由低到高排列為？ (A) Ⅳ<Ⅲ<Ⅱ<Ⅰ (B) Ⅳ<Ⅰ<Ⅲ<

32. 那一組試劑最適合用來進行下列的反應？ (A) LiAlH4, ether (B) BH3∙SMe2, THF (C) NaBH4, ethanol (D) Al(OiPr)3, iPrOH

6. 2,3-Dibromobutane can exist three stereoisomers as shown below. What stereoisomers would be forme

37. 下列化學反應的最終產物為何？ (A) (B) (C) (D) (E)

33. 下列反應的主產物為何？ (A) (B) (C) (D)

7. In the following structures, the protons pointed by arrow (on C2) which belong to diastereotopic

8. What is the correct IUPAC systematic name for the following compound?  (A) 1,2-Dichlorocyclohexen

9. What is the formal charge on the nitrogen atom indicated with the arrow in the following compound

10. Which of the following nucleophiles reacts with MeI in greatest rate in an aqueous solution?(A)

34. 下列反應條件何者適合用來進行下列之反應？ (A) n-Bu3SnH, AIBN, benzene (B) NiCl2, NaBH4, DMF(C) Raney Ni, EtOH (D) 以上皆

35. 下列 diol 何者無法與 HIO4 進行氧化切割(oxidative cleavage)反應？ (A) A (B) B (C) C (D) 以上三者皆可反應

38. 下列何者與甲醇鈉 (NaOMe) 的反應速率最快？(A) (B) (C) (D) (E)

36. 下列反應之最終產物為何？ (A) (B) (C) (D)

11. Which of the following compounds would have a greater dipole moment than you expect?   (E) None

12. Compound A: M+= 86, IR absorption: 3400 cm-1, 13C NMR spectral data: Broadband-decoupled 13C NMR

13. In the following, which one is the most acidic compound?  (A) 1 (B) 2 (C) 3 (D) 4 (E) 2 = 3

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