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What would you use to prepare the following ylide from the starting phosphonium salt? What would you use to prepare the following ylide from the starting phosphonium salt? A) Butyl lithium B) 1-Bromo-2-methylpropane C) Triphenylphosphine D) Acetic acid


A) Butyl lithium
B) 1-Bromo-2-methylpropane
C) Triphenylphosphine
D) Acetic acid

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

Correct Answer

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What product is formed when the following acetal is hydrolyzed with aqueous acid? What product is formed when the following acetal is hydrolyzed with aqueous acid? 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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What is the driving force for the Wittig reaction?


A) The formation of an alkene
B) The deprotonation of a phosphonium salt
C) The elimination of triphenylphosphine oxide
D) The formation of a phosphonium salt

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

Correct Answer

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Cyclic acetals are used as protecting groups for ketones or aldehydes because they are inert to all of the following reagents except


A) aqueous acid.
B) aqueous base.
C) oxidizing reagents.
D) reducing reagents.

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

Correct Answer

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What is the structure of 3-methylcyclohexanone? What is the structure of 3-methylcyclohexanone? A) I B) II C) III D) IV


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

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

Correct Answer

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What is the structure of benzophenone? What is the structure of benzophenone? A) I B) II C) III D) IV


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

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

Correct Answer

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What compound is consistent with the following 1H NMR spectrum? What compound is consistent with the following <sup>1</sup>H NMR spectrum? A) Acetone B) Propanal C) Cyclobutanone D) 2-butanone


A) Acetone
B) Propanal
C) Cyclobutanone
D) 2-butanone

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

Correct Answer

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When an aldehyde is reacted with excess ethanol with an acid as a catalyst,what is the product called?


A) Hemiacetal
B) Di-ether
C) Di-alkoxy alkane
D) Acetal

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

Correct Answer

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Give the IUPAC name for the following compound. Give the IUPAC name for the following compound. A) R-3-methylcyclohexanone B) S-3-methylcyclohexanone C) R-5-methylcyclohexanone D) S-5-methylcyclohexanone


A) R-3-methylcyclohexanone
B) S-3-methylcyclohexanone
C) R-5-methylcyclohexanone
D) S-5-methylcyclohexanone

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

Correct Answer

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Give the IUPAC name for the following compound. Give the IUPAC name for the following compound. A) R-3-bromobutanal B) S-3-bromobutanal C) R-2-bromobutan-4-al D) S-2-bromobutan-4-al


A) R-3-bromobutanal
B) S-3-bromobutanal
C) R-2-bromobutan-4-al
D) S-2-bromobutan-4-al

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

Correct Answer

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What is the IUPAC for the following compound? What is the IUPAC for the following compound? A) 1-Formyl-2-nitropropane B) 1-Formyl-3-nitrobutane C) 2-Nitrobutanal D) 3-Nitrobutanal


A) 1-Formyl-2-nitropropane
B) 1-Formyl-3-nitrobutane
C) 2-Nitrobutanal
D) 3-Nitrobutanal

E) None of the above
F) B) 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) I B) II C) III D) IV


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

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

Correct Answer

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