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Which of the following can behave as an electrophile?


A) CH3O-
B) Cl-
C) HBr
D) CH3CH2CH2CH3
E) None of the above

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What type of mechanism step is shown below? What type of mechanism step is shown below? A) S<sub>N</sub>2 B) Nucleophilic addition C) E2 D) Electrophile elimination E) Nucleophile elimination


A) SN2
B) Nucleophilic addition
C) E2
D) Electrophile elimination
E) Nucleophile elimination

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The following molecule can undergo heterolysis.Draw the mechanism for this step,and give the most likely products. The following molecule can undergo heterolysis.Draw the mechanism for this step,and give the most likely products.

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The two following molecules can react via a coordination step.Draw the mechanism for this step and the resulting product.Also label the nucleophile and the electrophile. The two following molecules can react via a coordination step.Draw the mechanism for this step and the resulting product.Also label the nucleophile and the electrophile.

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For the following reaction,label which reactant is the Lewis base,and supply the missing mechanism arrows. For the following reaction,label which reactant is the Lewis base,and supply the missing mechanism arrows.

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Which of the following is a coordination step? Which of the following is a coordination step? A) I B) II C) III D) IV E) V


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

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Which of the following is a coordination step? Which of the following is a coordination step? A) I B) II C) III D) IV E) V


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

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Draw the enol tautomer for the following compound. Draw the enol tautomer for the following compound.

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Which of the following is true of SN2 reactions?


A) They require two mechanism steps.
B) They involve two nucleophiles.
C) They do not require a leaving group.
D) They require one atom or group of atoms to be replaced by another atom or group of atoms.
E) They require two electron-poor species to react.

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The following molecule can undergo heterolysis.Draw the mechanism for this step,and give the most likely products. The following molecule can undergo heterolysis.Draw the mechanism for this step,and give the most likely products.

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Explain what is wrong with the following mechanism step,and provide an alternative way in which the two species could react. Explain what is wrong with the following mechanism step,and provide an alternative way in which the two species could react.

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The carbon that the oxygen is ...

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What type of mechanism step is shown below? What type of mechanism step is shown below? A) S<sub>N</sub>2 B) Nucleophilic addition C) Electrophilic addition D) Electrophile elimination E) Nucleophile elimination


A) SN2
B) Nucleophilic addition
C) Electrophilic addition
D) Electrophile elimination
E) Nucleophile elimination

Correct Answer

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For the following reaction,label which reactant is the Lewis acid,and supply the missing mechanism arrows. For the following reaction,label which reactant is the Lewis acid,and supply the missing mechanism arrows.

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There are two possible nucleophile elimination products for the molecule below.Give these products,and draw the nucleophile elimination step that leads to each one. There are two possible nucleophile elimination products for the molecule below.Give these products,and draw the nucleophile elimination step that leads to each one.

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The following compounds can react via an E2 step.Draw this mechanism,give the expected products,and label which of the starting materials is the nucleophile and which is the electrophile. The following compounds can react via an E2 step.Draw this mechanism,give the expected products,and label which of the starting materials is the nucleophile and which is the electrophile.

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Which of the following is true of curved arrow notation showing reaction mechanisms?


A) Arrows begin at the electrophile.
B) Arrows point to nucleophiles.
C) Arrows show electrons flowing from nucleophiles to electrophiles.
D) Only one arrow is required.
E) Arrows never begin at the middle of a multiple bond.

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Which of the following can behave as a nucleophile?


A) CH3CH2CH3
B) N(CH3) 4+
C) SiH4
D) CH3OH
E) None of the above

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Add mechanism arrows for the following reactions.Also supply missing electrons in the starting materials and products to complete the mechanism. Add mechanism arrows for the following reactions.Also supply missing electrons in the starting materials and products to complete the mechanism.

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Which of the following is an example of electrophilic addition? Which of the following is an example of electrophilic addition? A) I B) II C) III D) IV E) V


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

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Which of the following is considered heterolysis? Which of the following is considered heterolysis? A) I B) II C) III D) IV E) V


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

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