Arrange the following compounds in decreasing | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) The reactivity of alkyl halides towards $E_2$ reaction depends on the stability of the transition state,which is influenced by the stability of th

Vedclass · Accepted Answer

$z > y > x$

Vedclass · Answer

(C) The reactivity of alkyl halides towards $E_2$ reaction depends on the stability of the transition state,which is influenced by the stability of the alkene formed.$E_2$ reaction involves the abstraction of a $\beta$-hydrogen and the elimination of a leaving group in a single step.As the number of alkyl groups attached to the double-bonded carbons increases,the stability of the resulting alkene increases due to hyperconjugation and inductive effects.$(x)$ $CH_3-CH_2-CH_2-Br$ is a primary $(1^{\circ})$ alkyl halide,which forms a monosubstituted alkene.$(y)$ $CH_3-CH(Br)-CH_3$ is a secondary $(2^{\circ})$ alkyl halide,which forms a disubstituted alkene.$(z)$ $(CH_3)_3C-Br$ is a tertiary $(3^{\circ})$ alkyl halide,which forms a trisubstituted alkene.Since the stability of the alkene follows the order: trisubstituted > disubstituted > monosubstituted,the reactivity towards $E_2$ follows the order: $3^{\circ} > 2^{\circ} > 1^{\circ}$.Therefore,the correct order is $z > y > x$.

Arrange the following compounds in decreasing order of reactivity towards $E_2$ reaction:
$(x)$ $CH_3-CH_2-CH_2-Br$
$(y)$ $CH_3-CH(Br)-CH_3$
$(z)$ $(CH_3)_3C-Br$

Similar Questions

Phosgene is formed slowly from which one of the following on exposure to air and sunlight?

The formation of butane nitrile is possible in which of the following reactions?

What will be the reduction products of the following reactions:
$CHCl_3 \xrightarrow[Zn/HCl \text{ (alc.)}]{+2H}$
$CHCl_3 \xrightarrow[Zn/HCl \text{ (aq.)}]{+4H}$
$CHCl_3 \xrightarrow[Zn/H_2O]{+6H}$

The major product $(A)$ is:

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Arrange the following compounds in decreasing order of reactivity towards $E_2$ reaction:$(x)$ $CH_3-CH_2-CH_2-Br$$(y)$ $CH_3-CH(Br)-CH_3$$(z)$ $(CH_3)_3C-Br$