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Classify each alkene in vitamin D3 labeled I,II,III by the number of carbon substituents bonded to the double bond. Classify each alkene in vitamin D<sub>3</sub> labeled I,II,III by the number of carbon substituents bonded to the double bond. A) I = Disubstituted; II = trisubstituted; III = trisubstituted B) I = Monosubstituted; II = disubstituted; III = trisubstituted C) I = Disubstituted; II = disubstituted; III = trisubstituted D) I = Disubstituted; II = trisubstituted; III = disubstituted


A) I = Disubstituted; II = trisubstituted; III = trisubstituted
B) I = Monosubstituted; II = disubstituted; III = trisubstituted
C) I = Disubstituted; II = disubstituted; III = trisubstituted
D) I = Disubstituted; II = trisubstituted; III = disubstituted

E) A) and C)
F) B) and C)

Correct Answer

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What is the most likely mechanism for the following reaction? What is the most likely mechanism for the following reaction? A) S<sub>N</sub>1 B) S<sub>N</sub>2 C) E1 D) E2


A) SN1
B) SN2
C) E1
D) E2

E) None of the above
F) A) and B)

Correct Answer

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Which of the following is most likely to react as a nucleophile rather than a base? Which of the following is most likely to react as a nucleophile rather than a base? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

E) A) and B)
F) All of the above

Correct Answer

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Select the elimination product(s) formed by treating the indicated alkyl halide with a base. Select the elimination product(s) formed by treating the indicated alkyl halide with a base. A) Only I B) Only II C) Only III D) I,II,and III


A) Only I
B) Only II
C) Only III
D) I,II,and III

E) All of the above
F) A) and C)

Correct Answer

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What is the product of the following reaction? What is the product of the following reaction? A) Only I B) Only II C) Only III D) II and III


A) Only I
B) Only II
C) Only III
D) II and III

E) B) and C)
F) None of the above

Correct Answer

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How many unique β carbons are found in the alkyl halide below? How many unique β carbons are found in the alkyl halide below? A) 1 B) 2 C) 3 D) 4


A) 1
B) 2
C) 3
D) 4

E) A) and D)
F) A) and B)

Correct Answer

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How many different E2 products can form from the dehydrohalogenation of 2-bromobutane?


A) 1
B) 2
C) 3
D) 4

E) C) and D)
F) None of the above

Correct Answer

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Which of the following is the most reactive substrate in an E2 reaction? Which of the following is the most reactive substrate in an E2 reaction? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

E) B) and C)
F) A) and B)

Correct Answer

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Which of the following alkyl chloride affords alkene A exclusively under E2 reaction condition? Which of the following alkyl chloride affords alkene A exclusively under E2 reaction condition? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

E) A) and B)
F) B) and C)

Correct Answer

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Which of the following is most likely to react as a base rather than a nucleophile? Which of the following is most likely to react as a base rather than a nucleophile? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

E) A) and B)
F) B) and C)

Correct Answer

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Which of the following alkyl halide reacts the fastest in an E2 reaction? Which of the following alkyl halide reacts the fastest in an E2 reaction? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

E) All of the above
F) B) and D)

Correct Answer

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What is (are) the starting material(s) in the reaction below? What is (are) the starting material(s) in the reaction below? A) Only I B) Only II C) Only III D) II and III


A) Only I
B) Only II
C) Only III
D) II and III

E) A) and B)
F) None of the above

Correct Answer

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