H3C Br H3C CH3 H3C Aqueous ethanol HO CH3 H. H. CH3 BH3 O-BH3 Proton transfer d = El Elimination f=Snl Nucleophilic substitutioD Lewis acid/base e = E2 Elimination g= SN2 Nucleophilic substitutio Electrophilic addition
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.
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[References]
Br
H3C
CH3
H3C
H3C
1.
Aqueous ethanol
+
HO
+]
H.
CH3
H.
CH3
BH3
O-BH3
f=Sn1 Nucleophilic substitution
g = Sn2 Nucleophilic substitution
a = Proton transfer
d = El Elimination
b Lewis acid/base
e = E2 Elimination
c = Electrophilic addition
The rections above involve synthesis or reactions of alcohols and ethers.
Identify the mechanism by which they proceed from among the mechanisms listed. Use the letters a - gf
answers.
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The question is based on the concepts of reaction mechanisms of organic chemistry.
there can be different mechanisms like nucleophilic substitution, nucleophilic addition, electrophilic substitution etc.
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