In the first step of the El pathway, a carbocation intermediate forms after dissociation of the bromide ion. (A rearrangement can occur here as well, but we will ignore that pathway.) CH 3 H CAFC Ph CH ܓܠܐܝܕܐ ܟܣܒ ܢܕܐܝܪ H Ph CH 3 H Ph H Br Ph H₂O, EtOH, A - Br Then, rotation about the carbon-carbon o bond occurs to move the phenyl groups apart. 180° rotation about the C-C sigma bond CH3 H CH 3 "CC" Ph H C-C Ph H Ph Ph After rotation, the phenyl groups are farther apart.
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.
Does a rotation about the carbon-carbon sigma bond always happen in a E1 reaction? If not, why is it happening in this reaction?
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