The major product formed in the following reaction is CH3 CH(Cl) CH2-CH2 OH aq. KOH (a) CH3 CH=C

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The major product formed in the following reaction is CH3...

The major product formed in the following reaction is $\mathrm{CH}_3 \mathrm{CH}(\mathrm{Cl}) \mathrm{CH}_2-\mathrm{CH}_2 \mathrm{OH}$ aq. KOH (a) $\mathrm{CH}_3 \mathrm{CH}=\mathrm{CH}-\mathrm{CH}_2 \mathrm{OH}$ (b) $\mathrm{CH}_2=\mathrm{CH}-\mathrm{CH}_2-\mathrm{CH}_2 \mathrm{OH}$ (c)-(d) Compound can't copy

The major product formed in the following reaction is $\mathrm{CH}_3 \mathrm{CH}(\mathrm{Cl}) \mathrm{CH}_2-\mathrm{CH}_2 \mathrm{OH}$ aq. KOH
(a) $\mathrm{CH}_3 \mathrm{CH}=\mathrm{CH}-\mathrm{CH}_2 \mathrm{OH}$
(b) $\mathrm{CH}_2=\mathrm{CH}-\mathrm{CH}_2-\mathrm{CH}_2 \mathrm{OH}$
(c)-(d) Compound can't copy

Key Concepts

Elimination Reaction

Elimination reactions are chemical processes in which elements of a molecule are removed, leading to the formation of a double bond. This is a fundamental reaction type in organic chemistry that often competes with substitution reactions, especially when a base is present. Understanding elimination mechanisms is essential for predicting the structure of unsaturated organic products formed from saturated precursors.

Dehydrohalogenation

Dehydrohalogenation is a specific type of elimination reaction where a hydrogen halide is removed from an alkyl halide. The reaction typically involves a base that abstracts a proton while the halogen leaves, resulting in the formation of an alkene. This concept is central to understanding how halogenated compounds can be converted into more reactive unsaturated systems.

E2 Mechanism

The E2 (bimolecular elimination) mechanism is a concerted process in which proton abstraction and loss of the leaving group occur simultaneously. The rate of reaction in an E2 process is dependent on both the substrate and the base. Recognizing the E2 mechanism is important for predicting product distribution in reactions that involve strong bases under conditions that favor rapid, one-step transformations.

Regioselectivity and Zaitsev's Rule

Regioselectivity in elimination reactions describes the preference for removal of specific hydrogen atoms to form the most substituted, and often more stable, alkene product. Zaitsev's rule, a guiding principle in many eliminations, states that the formation of the more substituted alkene is favored. This concept helps in forecasting the major product in elimination reactions by considering the stability of the resulting double bond.

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