Which of the following statements is false with respect to the two reactions shown below? HBr, ether Br2, THF The mechanism of the bottom reaction involves a three-membered ring intermediate. The mechanism of the top reaction involves a tertiary carbocation. Both reactions result in a set of enantiomers. O The mechanism of the top reaction involves a three-membered ring intermediate. O The top reaction follows Markovnikov's rule.

Which of the following statements is false with respect to the two reactions shown below? HBr, ether Br2, THF The mechanism of the bottom reaction involves a three-membered ring intermediate. The mechanism of the top reaction involves a tertiary carbocation. Both reactions result in a set of enantiomers. O The mechanism of the top reaction involves a three-membered ring intermediate. O The top reaction follows Markovnikov's rule.

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

Chapter26: Aldol And Claisen Reactions

Section: Chapter Questions

Problem 54CTQ

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Concept explainers

Reactions of Ethers

Ethers (R-O-R’) are compounds formed by replacing hydrogen atoms of an alcohol (R-OH compound) or a phenol (C6H5OH) by an aryl/ acyl group (functional group after removing single hydrogen from an aromatic ring). In this section, reaction, preparation and behavior of ethers are discussed in the context of organic chemistry.

Epoxides

Epoxides are a special class of cyclic ethers which are an important functional group in organic chemistry and generate reactive centers due to their unusual high reactivity. Due to their high reactivity, epoxides are considered to be toxic and mutagenic.

Williamson Ether Synthesis

An organic reaction in which an organohalide and a deprotonated alcohol forms ether is known as Williamson ether synthesis. Alexander Williamson developed the Williamson ether synthesis in 1850. The formation of ether in this synthesis is an SN2 reaction.

Question

Which of the following statements is false with respect to the two reactions shown below?
HBr, ether
**.
Br2, THF
The mechanism of the bottom reaction involves a three-membered ring intermediate.
The mechanism of the top reaction involves a tertiary carbocation.
O Both reactions result in a set of enantiomers.
O The mechanism of the top reaction involves a three-membered ring intermediate.
O The top reaction follows Markovnikov's rule.

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