When quenching the reaction with water, why was the reaction tube placed in an ise bath and the water added dropwise? Assuming one uses 1-equivalent of t-butyl alcohol, why is it difficult to stop the reaction at the mono-alkylated product (1-t-butyl-2,5-dimethoxy benzene)?
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.
- When quenching the reaction with water, why was the reaction tube placed in an ise bath and the water added dropwise?
- Assuming one uses 1-equivalent of t-butyl alcohol, why is it difficult to stop the reaction at the mono-alkylated product (1-t-butyl-2,5-dimethoxy benzene)?
1. Quenching is a type of heat treatment process used for metal that involves rapid cooling of metal to adjust its mechanical properties. There are different types of quenching on the basis of emerging mediums for cooling metal. In this case, we are considering only water quenching. Water has a maximum cooling rate amongst all other cooling mediums. It can be easily disposed of. When the reaction tube placed in ice it will lower the temperature that leads to a decrease in the rate of reaction. Temperature shows the kinetic energy of a molecule and by placing a reaction tube in an ice bath we decrease its kinetic energy. This will decrease the quenching process. While adding water you have to be patient because if you lose your patience and add more water it will create a volcano because it is burning hot metal. You can take an example of hot oil, if you pour water in a burning hot oil it will creates fire.
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