Which of the following alkyl halides would not afford the ndicated product upon reaction with sodium ethoxide? IV O II

Q: What is the difference between a homogeneous and a het-erogeneous mixture?

A: Mixture is the physical combination of two or more than two different substances.

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A: Number of significant figures gives an idea on the accuracy of the measured value.

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Q: Br 1 equivalent PMe3 Br DMSO

A: SN2 reaction  will occur   and DMSO will Favours  SN2  Reaction.

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A: To predict the products and show mechanism using curved arrows.

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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.