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What is (are) the major organic product(s) obtained from the following reaction? What is (are) the major organic product(s) obtained from the following reaction? 1.(2R,3R) -dibromobutane 2.(2S,3S) -dibromobutane 3) meso-2,3-dibromobutane A) only 1 B) only 2 C) only 3 D) only 1 and 2 1.(2R,3R) -dibromobutane 2.(2S,3S) -dibromobutane 3) meso-2,3-dibromobutane


A) only 1
B) only 2
C) only 3
D) only 1 and 2

E) A) and D)
F) A) and C)

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What is the major organic product obtained from the following reaction? What is the major organic product obtained from the following reaction? A) 1 B) 2 C) 3 D) 4


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

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

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What type of reactive intermediate is formed in the reaction of an alkene with aqueous acid to give an alcohol?


A) carbocation
B) carbanion
C) radical
D) carbene

E) B) and D)
F) B) and C)

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

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

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What type of reaction mechanism accounts for the reaction of an alkene with HBr to give an alkyl bromide?


A) nucleophilic addition
B) electrophilic addition
C) radical addition
D) elimination

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

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What is (are) the major organic product(s) obtained from the following reaction? What is (are) the major organic product(s) obtained from the following reaction? A) only 1 B) only 2 C) only 3 D) only 2 and 3


A) only 1
B) only 2
C) only 3
D) only 2 and 3

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

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

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Consider the following reactions. Consider the following reactions. Pathway ___ involves a 1,2-shift. Pathway ___ involves a 1,2-shift.

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What is the best choice of reagent(s) to perform the following transformation? What is the best choice of reagent(s) to perform the following transformation?

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The reaction of methylpropene with HBr in ether gives one of the two products below as the major product. Answer the following question(s) about this reaction. The reaction of methylpropene with HBr in ether gives one of the two products below as the major product. Answer the following question(s) about this reaction. -Product _____ would have a higher energy transition state for the formation of the intermediate leading to it. -Product _____ would have a higher energy transition state for the formation of the intermediate leading to it.

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What is the major organic product obtained from the following reaction? What is the major organic product obtained from the following reaction? A) 1 B) 2 C) 3 D) 4


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

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

Correct Answer

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What is (are) the major organic product(s) obtained from the following reaction? What is (are) the major organic product(s) obtained from the following reaction? 1.(R) -2-bromo-3-methylbutane 2) (S) -2-bromo-3-methylbutane 3) 2-bromo-2-methylbutane A) only 1 B) only 2 C) only 3 D) only 1 and 2 1.(R) -2-bromo-3-methylbutane 2) (S) -2-bromo-3-methylbutane 3) 2-bromo-2-methylbutane"


A) only 1
B) only 2
C) only 3
D) only 1 and 2

E) B) and D)
F) B) and C)

Correct Answer

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What is the best choice of reagent(s) to perform the following transformation? What is the best choice of reagent(s) to perform the following transformation? A) O<sub>3</sub>; followed by (CH<sub>3</sub>) <sub>2</sub>S B) Hg(OAc) <sub>2</sub> and H<sub>2</sub>O; followed by NaBH<sub>4</sub> C) BH<sub>3</sub>; followed by H<sub>2</sub>O<sub>2</sub>, NaOH D) OsO<sub>4</sub>; followed by NaHSO<sub>3</sub>


A) O3; followed by (CH3) 2S
B) Hg(OAc) 2 and H2O; followed by NaBH4
C) BH3; followed by H2O2, NaOH
D) OsO4; followed by NaHSO3

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

Correct Answer

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What is the best choice of reagent(s) to perform the following transformation? What is the best choice of reagent(s) to perform the following transformation?

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Which of the following reactions of alkenes takes place with syn stereospecificity?


A) addition of bromine (treatment with Br2)
B) hydrogenation (treatment with H2/Pt)
C) addition of HBr (treatment with HBr)
D) acid-catalyzed hydration (treatment with aqueous H2SO4)

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

Correct Answer

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What is (are) the major organic product(s) obtained from the following reaction? What is (are) the major organic product(s) obtained from the following reaction? 1.(2R,3R) -dibromobutane 2) (2S,3S) -dibromobutane 3) meso-2,3-dibromobutane A) only 1 B) only 2 C) only 3 D) only 1 and 2 1.(2R,3R) -dibromobutane 2) (2S,3S) -dibromobutane 3) meso-2,3-dibromobutane


A) only 1
B) only 2
C) only 3
D) only 1 and 2

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

Correct Answer

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_____________is the starting material required to produce 3-methyl-1-butanol using the hydroboration-oxidation reaction. (Enter an IUPAC name.)

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