1a) Write a mechanism for the following transformation. Show all steps, all intermediates and all electron flow using arrows. Include an explanation for the selectivity of the reaction. Br2/FeBr3 Br
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.
Please answer all questions
![1a) Write a mechanism for the following transformation. Show all steps, all intermediates and all
electron flow using arrows. Include an explanation for the selectivity of the reaction.
Br2/FeBr3
Br
2. What makes a compound aromatic? Explain why the cyclopentadienyl anion is aromatic and the
cation is not using a Frost circle.
Cyclopentadienyl
anion
Cyclopentadienyl
cation
3) Draw the expected products for the following reactions.
HNO3, H2SO4
NO2
Br2, FeBr3](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F2aab4f3e-c5de-4a1e-a491-4e558f026ab6%2F3f0c3260-f4d0-4ec3-bd0c-cbab85d04f54%2Fkuew1fu_processed.png&w=3840&q=75)
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