Question 1

What is the major organic product obtained from the following reaction?

Accepted Answer

B

Question 2

What is the major organic product obtained from the following reaction?

Accepted Answer

The reaction involves the halogenation of a hydrocarbon (symbolized by R-H) with a halogen (symbolized by X2) in the presence of a catalyst (symbolized by FeX3). The major organic product obtained in this reaction is the halogenated hydrocarbon (symbolized by R-X). In this specific reaction, only one product is formed, which is the halogenated hydrocarbon with one halogen atom attached to the hydrocarbon (R-X). Therefore, the correct answer is choice C.

Question 3

What is the IUPAC name of the following compound?

Accepted Answer

The compound has a sulfur atom bonded to an ethyl group and a propane chain, which is represented by the prefix "ethylsulfanyl" followed by the parent alkane name "propane." Hence, the correct IUPAC name is 2-ethylsulfanylpropane.

Question 4

Which of the following are epoxides?

Accepted Answer

The answer of Which of the following are epoxides? 
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Question 5

What type of mechanism accounts for the cleavage of tert-butyl methyl ether upon treatment with HBr?

Accepted Answer

The answer of What type of mechanism accounts for the...

Question 6

What is the major organic product obtained from the following reaction?

Accepted Answer

The answer of What is the major organic product obtained...

Question 7

What type of mechanism accounts for the cleavage of dibutyl ether upon treatment with HBr to give two moles of 1-bromobutane?

Accepted Answer

The mechanism for the cleavage of dibutyl ether upon treatment with HBr to give two moles of 1-bromobutane is SN2. This involves a bimolecular nucleophilic substitution where the bromide ion from HBr attacks the ether, displacing the butoxy group and forming 1-bromobutane.

Question 8

What is the IUPAC name of the following compound?

Accepted Answer

The answer of What is the IUPAC name of the...

Question 9

Which of the following are ethers?

Accepted Answer

The answer of Which of the following are ethers? 
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Question 10

Which of the following statements are true? 
1.ethanol is more soluble in water than dimethyl ether
2.ethanol has a higher boiling point than dimethyl ether
3.ethanol has the same molecular weight as dimethyl ether

Accepted Answer

The answer of Which of the following statements are true?...

Question 11

What is the correct assignment of the names of the following ethers?

Accepted Answer

The answer of What is the correct assignment of the...

Question 12

What is the major organic product obtained from the following reaction?

Accepted Answer

The answer of What is the major organic product obtained...

Question 13

What type of reactive intermediate is formed in the reaction of tert-butyl methyl ether with HBr to give tert-butyl bromide?

Accepted Answer

The reaction of tert-butyl methyl ether with HBr to give tert-butyl bromide involves the formation of a tert-butyl cation as the reactive intermediate. This occurs because the ether is protonated by HBr, leading to the departure of a methoxide ion and the formation of a carbocation.

Question 14

Which of the following ethers cannot be prepared by a Williamson ether synthesis?

Accepted Answer

Tert-butyl phenyl ether cannot be prepared by Williamson ether synthesis as the tert-butyl group is too bulky to undergo the substitution reaction.

Question 15

What is the correct assignment of the names of the following ethers?

Accepted Answer

- 1 = oxirane is correct name for a three-membered ring with an oxygen atom.
- 2 = oxolane is the correct name for a five-membered ring with an oxygen atom.
- 3 = oxane is the correct name for a six-membered ring with an oxygen atom. 
Therefore, option D is the correct assignment of names for the given ethers.

Question 16

Which of the following reactions provides tert-butyl methyl ether in a high yield?

Accepted Answer

The reaction between potassium tert-butoxide and iodomethane is a classic example of a Williamson ether synthesis, which is a reliable method for producing ethers, including tert-butyl methyl ether, in high yield. This reaction involves the nucleophilic attack of the tert-butoxide ion on the methyl group of iodomethane.

Question 17

What is the major organic product obtained from the following reaction?

Accepted Answer

The given reaction involves the reaction of a primary alcohol with hydrogen iodide in the presence of phosphorus. This is a typical nucleophilic substitution reaction where the iodide ion acts as the nucleophile and attacks the carbon atom attached to the hydroxyl group (-OH) of the alcohol. This results in the formation of an alkyl iodide as the major product. In this case, the primary alcohol is 2-pentanol, and the iodide ion attacks the carbon atom attached to the -OH group to form 2-iodopentane. Therefore, the correct answer is choice B (2-iodopentane).

Question 18

What is the major organic product obtained from the following reaction?

Accepted Answer

The answer of What is the major organic product obtained...

Question 19

Which of the following reactions provides anisole (PhOCH₃) in a high yield?

Accepted Answer

C) Sodium phenoxide (PhONa) reacts with bromomethane in a nucleophilic substitution reaction to form anisole in high yield. This is a classic example of the Williamson ether synthesis.

Question 20

Which of the following are thiols?

Accepted Answer

The answer of Which of the following are thiols? 
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Quiz 11: Ethers, Epoxides, and Sulfides

What is the major organic product obtained from the following reaction?

What is the major organic product obtained from the following reaction?

What is the IUPAC name of the following compound?

Which of the following are epoxides?

What type of mechanism accounts for the cleavage of tert-butyl methyl ether upon treatment with HBr?

What is the major organic product obtained from the following reaction?

What type of mechanism accounts for the cleavage of dibutyl ether upon treatment with HBr to give two moles of 1-bromobutane?

What is the IUPAC name of the following compound?

Which of the following are ethers?

Which of the following statements are true? 1.ethanol is more soluble in water than dimethyl ether 2.ethanol has a higher boiling point than dimethyl ether 3.ethanol has the same molecular weight as dimethyl ether

What is the correct assignment of the names of the following ethers?

What is the major organic product obtained from the following reaction?

What type of reactive intermediate is formed in the reaction of tert-butyl methyl ether with HBr to give tert-butyl bromide?

Which of the following ethers cannot be prepared by a Williamson ether synthesis?

What is the correct assignment of the names of the following ethers?

Which of the following reactions provides tert-butyl methyl ether in a high yield?

What is the major organic product obtained from the following reaction?

What is the major organic product obtained from the following reaction?

Which of the following reactions provides anisole (PhOCH3) in a high yield?

Which of the following are thiols?

Which of the following reactions provides anisole (PhOCH₃) in a high yield?