複選題
59. Provide the reactants necessary to prepare the following alkene using the Wittig reaction. 
(A) ethanal and 2-bromopentane
(B) propanal and 2-bromopentane
(C) 2-pentanone and 1-bromopropane
(D) 2-pentanone and 2-bromopropane
(E) butanal and 2-bromopentane

55. What is the order of decreasing reactivity towards nucleophilic acyl substitution for the carboxylic acid derivatives below (A) I> II> III> IV (B) I> III> IV> II (C) II> IV> III> I (D) II> I> III> IV (E) III> IV> I> II

56. Which will be the major product of the following E2 reaction? (A)(B)(C)(D)(E)

57. Predict the product for the following reaction sequence. (A) 2,4-heptanediol (B) 1,4-heptanediol (C) 2,5-octanediol (D) 1,4-octanediol (E) 1,5-octanediol

58. Which of the following compounds will display a singlet, a triplet and a quartet in the 1 H NMR spectrum? (A) 2-chloro-4-methylpentane (B) 3-chloro-2-methylpentane (C) 3-chloropentane (D) 1-chloro-2,2-dimethylbutane (E) 3-chloro-3-methylpentane

60. What is the expected major product of the following reaction sequence? (A) I (B) II (C) III (D) IV (E) V

61. Predict the major product of the following reaction sequence. (A) (B) (C) (D) (E) 

62. Choose the major product of the following reaction sequence. (A) (B) (C) (D) (E) 

63. Predict the product of the following reaction. (A) I (B) II (C) III (D) IV (E) V

64. Predict the major product of the following reaction sequence. (A)(B)(C)(D)(E)

65. What is the relative reactivity of 2° vs 1° hydrogens in the free radical bromination of n-butane if the ratio of 1-bromobutane to 2-bromobutane formed is 7:93? (A) The 2° hydrogens are 20 times more reactive than the 1° ones. (B) The 2° hydrogens are 40 times more reactive than the 1° ones. (C) The 2° hydrogens are 60 times more reactive than the 1° ones. (D) The 2° hydrogens are 80 times more reactive than the 1° ones. (E) The 2° hydrogens are 100 times more reactive than the 1° ones.