Identifying Reaction Mechanisms - Organic Chemistry
Card 1 of 16
What is the major product of the reaction shown above?
What is the major product of the reaction shown above?
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Grignard reagents attack ketones at the site of the ketone's carbon to produce tertiary alcohols.
Grignard reagents attack ketones at the site of the ketone's carbon to produce tertiary alcohols.
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Under which of the following sets of conditions is an SN2 reaction most favored?
Under which of the following sets of conditions is an SN2 reaction most favored?
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SN2 reactions require a strong nucleophile. If the the nucleophile is weak, SN1 is favored over SN2.
For SN2 reactions less substitution in the electrophile is favored (methyl > primary > secondary).
For SN2 reactions polar aprotic solvents are preferred (DMSO, acetone, DMF and ethers are common polar aprotic solvents). Polar protic solvents (ethanol, methanol) favor SN1 reactions.
SN2 reactions require a strong nucleophile. If the the nucleophile is weak, SN1 is favored over SN2.
For SN2 reactions less substitution in the electrophile is favored (methyl > primary > secondary).
For SN2 reactions polar aprotic solvents are preferred (DMSO, acetone, DMF and ethers are common polar aprotic solvents). Polar protic solvents (ethanol, methanol) favor SN1 reactions.
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Which of these would react fastest with methanol via an SN1 mechanism?
Which of these would react fastest with methanol via an SN1 mechanism?
Tap to reveal answer
An SN1 mechanism involves the leaving of the bromine in the first step and the formation of a carbocation on that carbon. The molecule with the most stable carbocation will react most quickly.
The carbocation is most stable on the most highly substituted carbon. All the of the answer options form primary or secondary cations except for one. The correct answer has a carbocation on a carbon bonded to two methyl groups and one ethyl group. The correct answer is 
.
An SN1 mechanism involves the leaving of the bromine in the first step and the formation of a carbocation on that carbon. The molecule with the most stable carbocation will react most quickly.
The carbocation is most stable on the most highly substituted carbon. All the of the answer options form primary or secondary cations except for one. The correct answer has a carbocation on a carbon bonded to two methyl groups and one ethyl group. The correct answer is
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Consider the generic reaction shown below.
What type of reaction is occurring here?
Consider the generic reaction shown below.
What type of reaction is occurring here?
Tap to reveal answer
In this question, we're presented with a hypothetical reaction, and we're asked to identify which type of reaction is occurring. Let's go through each of the answer choices to see which one fits.
Addition reactions are ones in which two atoms or molecules come together. It takes the form of 
.
Elimination reactions are essentially the opposite of addition reactions. In this case, a molecule splits into two, taking the form of 
.
Rearrangement reactions are ones in which the reactant is manipulated in a way that gives product, but in the process, no additional reactants are consumed and no additional products are made. It takes the general form of 
.
Substitution reactions are ones in which there is some sort of exchange of atoms or functional groups between different reactants to give new products. In the reaction shown in the question stem, this qualifies as a substitution reaction.
In this question, we're presented with a hypothetical reaction, and we're asked to identify which type of reaction is occurring. Let's go through each of the answer choices to see which one fits.
Addition reactions are ones in which two atoms or molecules come together. It takes the form of
Elimination reactions are essentially the opposite of addition reactions. In this case, a molecule splits into two, taking the form of
Rearrangement reactions are ones in which the reactant is manipulated in a way that gives product, but in the process, no additional reactants are consumed and no additional products are made. It takes the general form of
Substitution reactions are ones in which there is some sort of exchange of atoms or functional groups between different reactants to give new products. In the reaction shown in the question stem, this qualifies as a substitution reaction.
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Which of these would react fastest with methanol via an SN1 mechanism?
Which of these would react fastest with methanol via an SN1 mechanism?
Tap to reveal answer
An SN1 mechanism involves the leaving of the bromine in the first step and the formation of a carbocation on that carbon. The molecule with the most stable carbocation will react most quickly.
The carbocation is most stable on the most highly substituted carbon. All the of the answer options form primary or secondary cations except for one. The correct answer has a carbocation on a carbon bonded to two methyl groups and one ethyl group. The correct answer is .
An SN1 mechanism involves the leaving of the bromine in the first step and the formation of a carbocation on that carbon. The molecule with the most stable carbocation will react most quickly.
The carbocation is most stable on the most highly substituted carbon. All the of the answer options form primary or secondary cations except for one. The correct answer has a carbocation on a carbon bonded to two methyl groups and one ethyl group. The correct answer is
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What is the major product of the reaction shown above?
What is the major product of the reaction shown above?
Tap to reveal answer
Grignard reagents attack ketones at the site of the ketone's carbon to produce tertiary alcohols.
Grignard reagents attack ketones at the site of the ketone's carbon to produce tertiary alcohols.
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Under which of the following sets of conditions is an SN2 reaction most favored?
Under which of the following sets of conditions is an SN2 reaction most favored?
Tap to reveal answer
SN2 reactions require a strong nucleophile. If the the nucleophile is weak, SN1 is favored over SN2.
For SN2 reactions less substitution in the electrophile is favored (methyl > primary > secondary).
For SN2 reactions polar aprotic solvents are preferred (DMSO, acetone, DMF and ethers are common polar aprotic solvents). Polar protic solvents (ethanol, methanol) favor SN1 reactions.
SN2 reactions require a strong nucleophile. If the the nucleophile is weak, SN1 is favored over SN2.
For SN2 reactions less substitution in the electrophile is favored (methyl > primary > secondary).
For SN2 reactions polar aprotic solvents are preferred (DMSO, acetone, DMF and ethers are common polar aprotic solvents). Polar protic solvents (ethanol, methanol) favor SN1 reactions.
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Consider the generic reaction shown below.
What type of reaction is occurring here?
Consider the generic reaction shown below.
What type of reaction is occurring here?
Tap to reveal answer
In this question, we're presented with a hypothetical reaction, and we're asked to identify which type of reaction is occurring. Let's go through each of the answer choices to see which one fits.
Addition reactions are ones in which two atoms or molecules come together. It takes the form of .
Elimination reactions are essentially the opposite of addition reactions. In this case, a molecule splits into two, taking the form of .
Rearrangement reactions are ones in which the reactant is manipulated in a way that gives product, but in the process, no additional reactants are consumed and no additional products are made. It takes the general form of .
Substitution reactions are ones in which there is some sort of exchange of atoms or functional groups between different reactants to give new products. In the reaction shown in the question stem, this qualifies as a substitution reaction.
In this question, we're presented with a hypothetical reaction, and we're asked to identify which type of reaction is occurring. Let's go through each of the answer choices to see which one fits.
Addition reactions are ones in which two atoms or molecules come together. It takes the form of
Elimination reactions are essentially the opposite of addition reactions. In this case, a molecule splits into two, taking the form of
Rearrangement reactions are ones in which the reactant is manipulated in a way that gives product, but in the process, no additional reactants are consumed and no additional products are made. It takes the general form of
Substitution reactions are ones in which there is some sort of exchange of atoms or functional groups between different reactants to give new products. In the reaction shown in the question stem, this qualifies as a substitution reaction.
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What is the major product of the reaction shown above?
What is the major product of the reaction shown above?
Tap to reveal answer
Grignard reagents attack ketones at the site of the ketone's carbon to produce tertiary alcohols.
Grignard reagents attack ketones at the site of the ketone's carbon to produce tertiary alcohols.
← Didn't Know|Knew It →
Under which of the following sets of conditions is an SN2 reaction most favored?
Under which of the following sets of conditions is an SN2 reaction most favored?
Tap to reveal answer
SN2 reactions require a strong nucleophile. If the the nucleophile is weak, SN1 is favored over SN2.
For SN2 reactions less substitution in the electrophile is favored (methyl > primary > secondary).
For SN2 reactions polar aprotic solvents are preferred (DMSO, acetone, DMF and ethers are common polar aprotic solvents). Polar protic solvents (ethanol, methanol) favor SN1 reactions.
SN2 reactions require a strong nucleophile. If the the nucleophile is weak, SN1 is favored over SN2.
For SN2 reactions less substitution in the electrophile is favored (methyl > primary > secondary).
For SN2 reactions polar aprotic solvents are preferred (DMSO, acetone, DMF and ethers are common polar aprotic solvents). Polar protic solvents (ethanol, methanol) favor SN1 reactions.
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Which of these would react fastest with methanol via an SN1 mechanism?
Which of these would react fastest with methanol via an SN1 mechanism?
Tap to reveal answer
An SN1 mechanism involves the leaving of the bromine in the first step and the formation of a carbocation on that carbon. The molecule with the most stable carbocation will react most quickly.
The carbocation is most stable on the most highly substituted carbon. All the of the answer options form primary or secondary cations except for one. The correct answer has a carbocation on a carbon bonded to two methyl groups and one ethyl group. The correct answer is .
An SN1 mechanism involves the leaving of the bromine in the first step and the formation of a carbocation on that carbon. The molecule with the most stable carbocation will react most quickly.
The carbocation is most stable on the most highly substituted carbon. All the of the answer options form primary or secondary cations except for one. The correct answer has a carbocation on a carbon bonded to two methyl groups and one ethyl group. The correct answer is
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Consider the generic reaction shown below.
What type of reaction is occurring here?
Consider the generic reaction shown below.
What type of reaction is occurring here?
Tap to reveal answer
In this question, we're presented with a hypothetical reaction, and we're asked to identify which type of reaction is occurring. Let's go through each of the answer choices to see which one fits.
Addition reactions are ones in which two atoms or molecules come together. It takes the form of .
Elimination reactions are essentially the opposite of addition reactions. In this case, a molecule splits into two, taking the form of .
Rearrangement reactions are ones in which the reactant is manipulated in a way that gives product, but in the process, no additional reactants are consumed and no additional products are made. It takes the general form of .
Substitution reactions are ones in which there is some sort of exchange of atoms or functional groups between different reactants to give new products. In the reaction shown in the question stem, this qualifies as a substitution reaction.
In this question, we're presented with a hypothetical reaction, and we're asked to identify which type of reaction is occurring. Let's go through each of the answer choices to see which one fits.
Addition reactions are ones in which two atoms or molecules come together. It takes the form of
Elimination reactions are essentially the opposite of addition reactions. In this case, a molecule splits into two, taking the form of
Rearrangement reactions are ones in which the reactant is manipulated in a way that gives product, but in the process, no additional reactants are consumed and no additional products are made. It takes the general form of
Substitution reactions are ones in which there is some sort of exchange of atoms or functional groups between different reactants to give new products. In the reaction shown in the question stem, this qualifies as a substitution reaction.
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Which of these would react fastest with methanol via an SN1 mechanism?
Which of these would react fastest with methanol via an SN1 mechanism?
Tap to reveal answer
An SN1 mechanism involves the leaving of the bromine in the first step and the formation of a carbocation on that carbon. The molecule with the most stable carbocation will react most quickly.
The carbocation is most stable on the most highly substituted carbon. All the of the answer options form primary or secondary cations except for one. The correct answer has a carbocation on a carbon bonded to two methyl groups and one ethyl group. The correct answer is .
An SN1 mechanism involves the leaving of the bromine in the first step and the formation of a carbocation on that carbon. The molecule with the most stable carbocation will react most quickly.
The carbocation is most stable on the most highly substituted carbon. All the of the answer options form primary or secondary cations except for one. The correct answer has a carbocation on a carbon bonded to two methyl groups and one ethyl group. The correct answer is
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What is the major product of the reaction shown above?
What is the major product of the reaction shown above?
Tap to reveal answer
Grignard reagents attack ketones at the site of the ketone's carbon to produce tertiary alcohols.
Grignard reagents attack ketones at the site of the ketone's carbon to produce tertiary alcohols.
← Didn't Know|Knew It →
Under which of the following sets of conditions is an SN2 reaction most favored?
Under which of the following sets of conditions is an SN2 reaction most favored?
Tap to reveal answer
SN2 reactions require a strong nucleophile. If the the nucleophile is weak, SN1 is favored over SN2.
For SN2 reactions less substitution in the electrophile is favored (methyl > primary > secondary).
For SN2 reactions polar aprotic solvents are preferred (DMSO, acetone, DMF and ethers are common polar aprotic solvents). Polar protic solvents (ethanol, methanol) favor SN1 reactions.
SN2 reactions require a strong nucleophile. If the the nucleophile is weak, SN1 is favored over SN2.
For SN2 reactions less substitution in the electrophile is favored (methyl > primary > secondary).
For SN2 reactions polar aprotic solvents are preferred (DMSO, acetone, DMF and ethers are common polar aprotic solvents). Polar protic solvents (ethanol, methanol) favor SN1 reactions.
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Consider the generic reaction shown below.
What type of reaction is occurring here?
Consider the generic reaction shown below.
What type of reaction is occurring here?
Tap to reveal answer
In this question, we're presented with a hypothetical reaction, and we're asked to identify which type of reaction is occurring. Let's go through each of the answer choices to see which one fits.
Addition reactions are ones in which two atoms or molecules come together. It takes the form of .
Elimination reactions are essentially the opposite of addition reactions. In this case, a molecule splits into two, taking the form of .
Rearrangement reactions are ones in which the reactant is manipulated in a way that gives product, but in the process, no additional reactants are consumed and no additional products are made. It takes the general form of .
Substitution reactions are ones in which there is some sort of exchange of atoms or functional groups between different reactants to give new products. In the reaction shown in the question stem, this qualifies as a substitution reaction.
In this question, we're presented with a hypothetical reaction, and we're asked to identify which type of reaction is occurring. Let's go through each of the answer choices to see which one fits.
Addition reactions are ones in which two atoms or molecules come together. It takes the form of
Elimination reactions are essentially the opposite of addition reactions. In this case, a molecule splits into two, taking the form of
Rearrangement reactions are ones in which the reactant is manipulated in a way that gives product, but in the process, no additional reactants are consumed and no additional products are made. It takes the general form of
Substitution reactions are ones in which there is some sort of exchange of atoms or functional groups between different reactants to give new products. In the reaction shown in the question stem, this qualifies as a substitution reaction.
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