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Identify the starting material that would be used to form the following product in a ring-closing metathesis reaction utilizing a Grubbs catalyst? <sup> </sup>Identify the starting material that would be used to form the following product in a ring-closing metathesis reaction utilizing a Grubbs catalyst? A) I B) II C) III D) IV


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

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

Correct Answer

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Identify the major organic product of the following reaction. Identify the major organic product of the following reaction. A) I B) II C) III D) IV


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

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

Correct Answer

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Organocuprate reagents (R2CuLi) react with several compounds.Which listed reaction is not correct?


A) Acid chlorides react with organocuprate reagents to form ketones.
B) Epoxides react with organocuprate reagents to form alcohols.
C) Alkyl halides react with organocuprate reagents to form coupling products containing a new carbon-carbon bond.
D) Carbon dioxide reacts with organocuprate reagents to form carboxylic acids.

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

Correct Answer

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Identify the structure of the major organic product that results from the following reaction. Identify the structure of the major organic product that results from the following reaction. A) I B) II C) III D) IV


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

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

Correct Answer

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Which statement below best explains what is meant by the statement, "An organocuprate reaction with a vinyl halide is stereospecific"?


A) The reaction of a specific stereoisomer with the R2CuLi reagent will yield that particular stereoisomer as the product.
B) The reaction of a vinyl halide with the R2CuLi reagent will only yield the cis product.
C) The reaction of a vinyl halide with the R2CuLi reagent will only yield the trans product.
D) The reaction of a vinyl halide with the R2CuLi reagent will only yield one enantiomer product-either R or S configuration.

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

Correct Answer

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What is the missing reactant in the following reaction? What is the missing reactant in the following 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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Identify the products of the following reaction. Identify the products of the following reaction. A) I B) II C) III D) IV


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

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

Correct Answer

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What starting material could yield the following compound if Simmons-Smith conditions were used? What starting material could yield the following compound if Simmons-Smith conditions were used? A) I B) II C) III D) IV


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

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

Correct Answer

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Which of the following is not a step in the Suzuki reaction?


A) Oxidative addition of R-X to the palladium catalyst
B) Substitution of the R group to the palladium catalyst
C) Transfer of the alkyl group from the organoborane to palladium
D) Reductive elimination of R-R, forming the new C-C bond

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

Correct Answer

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Identify the structure of the organic product Y formed in the following reaction sequence. Identify the structure of the organic product Y formed in the following reaction sequence. A) I B) II C) III D) IV


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

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

Correct Answer

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What starting material could yield the following compound if Simmons-Smith conditions were used? What starting material could yield the following compound if Simmons-Smith conditions were used? A) I B) II C) III D) IV


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

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

Correct Answer

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Which of the following statements is not true about the Simmons-Smith reaction?


A) The Simmons-Smith reaction involves the formation of a free carbene.
B) The Simmons-Smith reaction uses the reagents zinc-copper couple.
C) The Simmons-Smith reaction is stereospecific.
D) The Simmons-Smith reaction involves CH2I2 reacting with a copper-activated zinc reagent.

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

Correct Answer

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Which of the following is true about the use of the Grubbs catalyst?


A) The Grubbs catalyst is used in carbon-carbon coupling reactions.
B) The Grubbs catalyst is used in alkene metathesis.
C) The Grubbs catalyst is used in carbene formation.
D) The Grubbs catalyst is used with palladium as a co-catalyst.

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

Correct Answer

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Why is the Grubbs catalyst synthetically important?


A) Because it only requires dilute concentrations of the reactants
B) Because it produces only stereospecific products
C) Because it produces only stereoselective products
D) Because it provides a synthetic pathway for ring-closing metathesis reactions

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

Correct Answer

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What is the major organic product of the following reaction? What is the major organic 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) A) and C)

Correct Answer

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Which of the following statements is not true about a carbene?


A) A carbene is a neutral reactive intermediate.
B) A carbene contains a divalent carbon.
C) A carbene is sp3 hybridized.
D) A carbene is surrounded by six electrons.

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

Correct Answer

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What products are formed when diazomethane is heated?


A) Methane gas and nitrogen gas
B) Propene gas and nitrogen gas
C) Methyl radical and nitrogen gas
D) Methylene and nitrogen gas

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

Correct Answer

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