9. What is the missing reagent in the reaction below? Ph3P. Br II II IV А) I B) Д С) I D) IV 10. Butanal (MW=72) has a boiling point of 76 °C while butanol (MW=74) has a boiling point of 118 °C. What accounts for this difference in boiling points? A) Butanol is polar while butanal is not polar. B) Butanol can exhibit dipole-dipole interactions while butanal cannot. Butanol can hydrogen bond and butanal cannot hydrogen bond. D) Butanal is less sterically hindered than butanol.
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.
In the q.9 Witting olefination occurs. In this reaction, a ketone or aldehyde reacts with phosphonium ylide to produce an alkene.
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