43. 下列化學反應最終的產物為何? (A) Ⅰ (B) Ⅱ (C) Ⅲ (D) Ⅰ和Ⅱ (E) Ⅰ和Ⅲ
47. 那一個化合物的氫核磁共振光譜,較有可能出現化學位移約在−3.00 ppm 的位置?(A) (B) (C) (D)
25. What is the best reagent for the following reaction?Ph OHOHPh OH? (A) PCC (B) Na2Cr2O7, H2SO4
44. 下列化合物中,何者依國際純化學與應用化學聯盟 (IUPAC) 命名為 4-Amino-2-bromoanisole? (A) Ⅰ (B) Ⅱ (C) Ⅲ (D) Ⅳ (E) Ⅴ
26. What is the major product of the following reaction? (E) None of the above.
45. 下列化合物何者不是以下反應的中間產物? (A) (B) (C) (D) (E)
27. What product would be obtained by the following reaction? (E) None of the above.
48. 那一個烯類化合物進行臭氧反應(ozonolysis)的速率最快?(A) (B) (C) (D)
28. Which fragment would you expect to be the base peak in the mass spectrum of limonene? (A) m/z
29. What is the major product of the following reaction??
49. 18-Crown-6 皇冠醚(crown ether)與下列那一個陽離子的結合能力最強?(A) Li+(B) Na+(C) K+(D) Cs+
50. 下列反應的主產物為何? (A) (B) (C) (D) 以上皆非
46. 將 D-葡萄糖 (D-glucose) 溶解在甲醇中並通入氯化氫氣體會得到什麼產物? (A) Ⅰ和Ⅲ (B) Ⅱ和Ⅲ (C) Ⅰ和Ⅲ (D) Ⅰ和Ⅳ (E) Ⅱ和Ⅳ
47. 下列化合物在氫及碳核磁共振光譜中各有幾種不同的化學位移信號? (A) 氫:6 種;碳:9 種 (B) 氫:5 種;碳:5 種 (C)氫:6 種;碳:5 種(D) 氫:7 種;碳:5 種 (E)
30. Which of the following would correctly describe the respective 13C NMR and 1H NMR spectra for th
48. 下列兩個化合物的關係為何? (A) 組成異構物 (constitutional isomer) (B) 鏡像異構物 (enantiomer)(C) 同一個化合物 (identical) (D)
31. What is the major product of the following reaction?
49. 以下反應的主要產物為何? (A) (B) (C) (D) (E)
32. What is the major product of the following reaction? (E) None of the above.
33. How would you carry out the following transformation? (A) 1. (a) NaOH, (b) CH3CH2Br; 2. Na, NH
34. What is the best reagent for the following transformation? (A) HF (B) CuF (C) HBF4 (D) Bu4NF (E
50. 下列 2-甲基-2-丁烯經由一系列的反應後最終產物為何? (A) (B) (C) (D) (E)
35. What product would you expect of the following transformation?
36. In the following reaction, what is the major product?
37. In the following reaction, which compound is the major product? (A) No reaction