Problem IV: Provide the major product in the following Sharpless Asymmetric epoxidation reactions. ADmix is the commercial name given to the reagent mixture used in this reaction. HO OH OH ADmix-a ADmix-B ADmix-a

Q: Н I-Z S ОН

A: Amide functional group: Primary: R-CONH2 Secondary : R-CONH-R Tertiary : R-CONR2

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Q: H₂N O O

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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.