38. Which of the following reagents could not be applied to the following transformation? (A) HgCl
39. What is the final product of the following reaction? (E) None of the above.
40. In the following reaction, what is the major product?
41. What is the best reagent for the following transformation? (A) 1. PhMgBr, ether 2. H3O (B) Ph
42. In the following reaction, which compound is the major product?
43. What is the final product of the following sequential reactions?
44. In the following reaction, which compound is the major product?
45. In the following reaction, what is the major product?
46. In the following reaction, which compound is the major product?
47. The following substance is heated in the presence of aqueous NaOH. The product of the reaction i
48. In the following reaction, which compound is the major product?
49. In the following reaction, which compound is the major product?
50. Which reagent would be best suited for the transformation shown? (A) alkaline Cu2 in H2O (B)
51. In the following reaction, which compound is the major product?
52. In the following reaction, what is the major product?
53. In the following reaction, which compound is the major product?
54. Which of the following reaction is called Suzuki-Miyaura coupling reaction? (E) None of the a
55. In the following reaction, which compound is the major product?
56. In the following reaction, which compound is the major product? (E) None of the above.
57. In the following reaction, which compound is the major product?
58. In the following reaction, which compound is the major product?
59. What type of intermediate is present in the following reaction? (A) Carbocation (B) Carbanion (
60. The following reaction is an example of the Ugi-Heck reaction. What product can be produced?
【單選題】每題 2 分，共計 40 分，答錯 1 題倒扣 0.5 分，倒扣至本大題零分為止，未作答，不給分亦不扣分。61. List the following esters in order of
62. The chiral centers in the structure of penicillin V are indicated ( C-2, C-5, and C-6). In the f