Br + Na :C: А. + KCN CN KBr + а. | Hint: KCN is a ionic compound, and in solution it give off K* cation, and -:C=N anion. NaCI В. • Na :S-CH3 b. Hint: note that we usually place the solvent and condition (such as heating on top or below the reaction arrow). B.
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.
1a. Provide the products/reactants of the SN2 reactions below. Be very careful of the stereochemistry if applicable (Note that in SN2 reaction, the reactant’s chirality (aka configuration of the halo-carbon) is inverted. Please compare every two consecutive reactions.
1b. Draw the mechanism (use curved arrow) of EITHER a or b above
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