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.
![The image shows a chemical structure known as 3-Pentanone which incorporates a benzene ring. Here's a detailed breakdown:
1. **Benzene Ring**: The core structure is a hexagonal benzene ring, depicted with alternating double bonds.
2. **Functional Groups and Substituents**:
- **Carbonyl Group (C=O)**: Attached directly to the benzene ring.
- **Methyl Group (CH₃)**:
- Attached to the carbon next to the carbonyl group.
- Another methyl group is attached at the opposite side of the ring.
- **Isopropyl Group**: Positioned next to the carbonyl group on the benzene ring.
This compound is likely acetophenone, which is a simple aromatic ketone used in various applications, including as a fragrance and a precursor to other chemicals. The diagram provides a structural representation, important for understanding its chemical behavior and interactions.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc6ac2863-162e-4262-bc0d-8a607c6a4bb3%2F3cd0657e-6b95-4639-af64-4c6ab5969339%2Frp3qomx_processed.jpeg&w=3840&q=75)
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Here acylation reaction undergoes the formation of acyl carbocation. Now between 1 and 2, the 1 position has more electron density due to the ethyl group and for this, attack happens in 1.
After birtch reduction, the free electron attack happens from epso position which is the ortho position of ethyl group (for electron donating group).
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