Question:
Which of the following compounds will exhibit geometrical isomerism?
Which of the following compounds will exhibit geometrical isomerism?
Updated On: Jul 30, 2023
- 1-Phenyl-2-butane
- 3-Phenyl-1-butene
- 2-Phenyl-1-butene
- 1,1-Diphenyl-1-propene
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The Correct Option is A
Solution and Explanation
Only compound 1-phenyl-2-butene can show geometrical isomerism.
(a) 3-phenyl-1-butene
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(No geometrical isomerism)
(b) 2-phenyl-1-butene
(No geometrical isomerism)
(c) 1,1, diphenyl-1-propene
(No geometrical isomerism)
(d) 1-phenyl-2-butene :
$C \overset{4}{H}_{3}-H\overset{3}{C}= \overset{1}{C}H-C\overset{1}{H_{2}}-ph$
The correct possible answer is (d) but due printing mistake. No answer is correct.
(a) 3-phenyl-1-butene
undefinedundefined(No geometrical isomerism)
(b) 2-phenyl-1-butene
(No geometrical isomerism)
(c) 1,1, diphenyl-1-propene
(No geometrical isomerism)
(d) 1-phenyl-2-butene :
$C \overset{4}{H}_{3}-H\overset{3}{C}= \overset{1}{C}H-C\overset{1}{H_{2}}-ph$
The correct possible answer is (d) but due printing mistake. No answer is correct.
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Concepts Used:
Organic Chemistry – Some Basic Principles and Techniques - Reaction Mechanism
SN1 Reaction Mechanism:
SN1 reaction mechanism takes place by following three steps –
- Formation of carbocation
- Attack of nucleophile
- Deprotonation
SN2 Reaction Mechanism:
The SN2 reaction mechanism involves the nucleophilic substitution reaction of the leaving group (which generally consists of halide groups or other electron-withdrawing groups) with a nucleophile in a given organic compound.
Electrophilic Aromatic Substitution Reaction Mechanism:
The mechanism of an electrophilic aromatic substitution reaction contains three main components which are:
- A new sigma bond from C=C is formed during the reaction in the arene nucleophile.
- Due to the breaking of the C-H sigma bond, a proton is removed.
- The C=C bond is reformed and it restores the aromaticity of the compound.
Electrophilic Substitution Reaction Mechanism:
The electrophilic substitution reaction mechanism is composed of three steps, which will be discussed more below.
- Electrophile Generation
- Carbocation Formation
- Proton Removal