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96年 - 96學士後西醫-有機化學 #37201
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71. What is the major organic product of the following sequence of reactions?
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統計：
A(0), B(2), C(8), D(0), E(0) #1074617
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B1 · 2024/07/09
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相關試題
72. What product would you obtain from Claisen condensation of ethyl propanoate? (A) Ethyl 2-ethyl-3-oxopentanoate (B) Propyl 2-methyl-3-oxopentanoate (C) Ethyl 2-methyl-3-oxohexanoate (D) Propyl 2-methyl-3-oxohexanoate (E) Ethyl 2-methyl-3-oxopentanoate
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73.What is the major organic product of the reaction shown below? (A) Ethyl benzoate (B) Phenyl propionate (C) Diphenyl ketone (D) Phenyl vinyl ketone (E) An phenylseleno ketone
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74. Which of the following reactions has a mechanism that involves the formation of a cyclic intermediate from acyclic starting materials? (A) Dehydration of an alcohol (B) Addition of HBr to an alkene (C) Chlorination of an alkane (D) Addition of bromine to an alkene (E) Addition of Grignard to ketone
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75. Which of the following substituents would have the lowest Cahn-Ingold-Prelog priority? (A) -CH2OH (B) -CH2COOH (C) -CH2CH2Cl (D) -CH2NH2 (E) -CH2CH2Br
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76. Which sets of reagents would give the correct product for this reaction? (A) Hg(OCOCF3)2 in MeOH (B) 1. Hg(OAc)2 in THF/H2O2, 2. NaBH4 (C) 1. BH3, 2. NaOH, H2O2 (D) 1. BH3, 2. H2O2, OH- , 3. NaH, 4. CH3I (E) H+ , CH3OH
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77. The Frost circle can be used to reproduce the molecular orbital energies of a cyclic polyene. What species would be described by the Frost circle to the right? (A) Cyclopentadienyl cation (B) Cyclopentadienyl radical (C) Cylopentadienyl anion (D) Cyclopentadiene (E) Cyclopentene anion
#1074623
78. What is the product of acid-catalyzed hydrolysis of the ketal shown below? ？
#1074624
79. What is the product in the following reaction sequence?(A)(B)(C)(D)(E) None of the above
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80. What is the major product for the following reaction?
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沒有 【段考】高二英文上學期 權限，請先開通．
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