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


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

Correct Answer

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Which of the following is an acceptable mechanism step? Which of the following is an acceptable mechanism step? A) I B) II C) III D) IV E) V


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

Correct Answer

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Suppose that the two following molecules undergo an electrophilic addition step.Draw the mechanism and the product,and label the nucleophile and the electrophile. Suppose that the two following molecules undergo an electrophilic addition step.Draw the mechanism and the product,and label the nucleophile and the electrophile.

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The two following species can react via an electrophile elimination step.Draw the mechanism arrows for this step,give the expected product,and label the nucleophile and the electrophile. The two following species can react via an electrophile elimination step.Draw the mechanism arrows for this step,give the expected product,and label the nucleophile and the electrophile.

Correct Answer

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Draw the keto tautomer for the following compound. Draw the keto tautomer for the following compound.

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Explain why the products are favored in the following reaction. Explain why the products are favored in the following reaction.

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Two single bonds are lost,and a new sing...

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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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Mechanisms must have arrows th...

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Which of the following is true about Lewis acids?


A) They accept electrons.
B) They often have a negative charge.
C) They tend to be electron rich.
D) They attract electron-poor sites.
E) They only attract protons.

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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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The following mechanism proceeds through nucleophile elimination.Fill in the omitted mechanism arrows,and draw the missing product in the box. The following mechanism proceeds through nucleophile elimination.Fill in the omitted mechanism arrows,and draw the missing product in the box.

Correct Answer

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


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

Correct Answer

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Which of the following is an acceptable mechanism step? Which of the following is an acceptable mechanism step? A) I B) II C) III D) IV E) V


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

Correct Answer

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The two following species can react via an electrophile elimination step.Draw the mechanism arrows for this step,give the expected product,and label the nucleophile and the electrophile. The two following species can react via an electrophile elimination step.Draw the mechanism arrows for this step,give the expected product,and label the nucleophile and the electrophile.

Correct Answer

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Which of the following 1,2-hydride shift rearrangements is most likely? Which of the following 1,2-hydride shift rearrangements is most likely? A) I B) II C) III D) IV E) None of these


A) I
B) II
C) III
D) IV
E) None of these

Correct Answer

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In the following reaction,identify all electron-rich and electron-poor sites in the starting materials,and supply the missing mechanism arrows required to form the given product. In the following reaction,identify all electron-rich and electron-poor sites in the starting materials,and supply the missing mechanism arrows required to form the given product.

Correct Answer

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For the following reaction scheme,name what type of elementary mechanism step is occurring in Step 1 and Step 2.Choose from the following: SN2,coordination,heterolysis,E2,nucleophilic addition,nucleophile elimination,electrophilic addition,electrophile elimination,carbocation rearrangement,or none of the above. For the following reaction scheme,name what type of elementary mechanism step is occurring in Step 1 and Step 2.Choose from the following: S<sub>N</sub>2,coordination,heterolysis,E2,nucleophilic addition,nucleophile elimination,electrophilic addition,electrophile elimination,carbocation rearrangement,or none of the above.

Correct Answer

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Step 1 is electrophi...

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The following carbocation undergoes a 1,2-hydride shift.Draw the mechanism,and give the products of this shift. The following carbocation undergoes a 1,2-hydride shift.Draw the mechanism,and give the products of this shift.

Correct Answer

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Which of the following is an E2 step? Which of the following is an E2 step? A) I B) II C) III D) IV E) V


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

Correct Answer

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