66. What is the major organic product obtained from the following reaction?

 
(A) 1
(B) 2
(C) 3
(D) 4
(E) 5

49. Show how you might use an annulation reaction to synthesize the following compound. Draw the structure of final product. (A) (B) (C) (D) (E)

49. 下列反應的主要產物為何？(A)(B)(C)(D)

48. 下列反應的最終產物為何？ (A) (B) (C) (D) 以上皆非

74. Predict the major product for the following reaction. (A) I (B) II (C) III (D) IV (E) II & IV

25. What starting materials would be suitable for preparing this compound by a combination of Michael and aldol reactions? (A) 4-methyl-2-cyclohexen-1-one and 3-butenal (B) 2-methylcyclohexane-1,3-dione and 3-buten-2-one (C) 2-methyl-2-vinyl-3-cyclohexen-1-one and acetaldehyde (D) 2-methyl-2-cyclohexen-1-one and 1,4-dichlorobutan-2-one (E) 4-methylcyclohexnone and methyl vinyl ketone

26. 經由下列反應後生成化合物 U，請問化合物 U 之結構為何？(A)(B)(C)(D)(E)

33. Which of the following compounds will react with methyl vinyl ketone in a Robinson annulation to generate the cyclic enone below?  (A) 1-pentene (B) cyclohexanone (C) 2-pentanone (D) pentanal (E) None of the above

71. Which of the following series of synthetic steps could be used to carry out the transformation shown below? (I) NaOH, (II) heat, (III) CH3COCH2COOEt, EtONa, (IV) NaOH, heat, then HCl, H2O (A) I → II → III → IV (B) IV → II → I → III (C) III →IV → II → I (D) II → IV → III → I (E) None of the above

67. Which of the following statements correctly describes the molecule shown below?  (A) Its C-4 NH2 is strongly basic while the C-1 NH2 is weekly acidic. (B) Its C-4 NH2 is weekly basic while the C-1 NH2 is strongly acidic. (C) Its C-4 NH2 is weekly basic while the C-1 NH2 is weekly acidic. (D) Its C-4 NH2 is strongly basic while the C-1 NH2 is strongly acidic. (E) Both C-1 NH2 and the C-4 NH2 are weekly basic.

68. Which of the compounds below undergoes solvolysis in aqueous ethanol most rapidly? (A) Cyclohexyl bromide (B) Isopropyl chloride (C) Methyl iodide (D) 3-Chloropentane (E) 3-Iodo-3-methyl pentane

105年 - 105 學士後西醫：有機化學#78642

104年 - 104 學士後西醫：有機化學#27032

103年 - 103 學士後西醫：有機化學#27037

102年 - 102 學士後西醫：有機化學#27324

101年 - 101 學士後西醫：有機化學#27197

100年 - 100 學士後西醫：有機化學#35480

98年 - 098 學士後西醫：有機化學#37156

96年 - 96學士後西醫-有機化學 #37201