Arrange the following in order of ease of deh | vedclass

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

Question

(A) The ease of dehydrohalogenation depends on the stability of the carbocation intermediate formed or the stability of the resulting conjugated syste

Vedclass · Accepted Answer

$iii > ii > i > iv$

Vedclass · Answer

(A) The ease of dehydrohalogenation depends on the stability of the carbocation intermediate formed or the stability of the resulting conjugated system.$(i)$ Bromocyclohexane: Alkyl halide,undergoes elimination to form cyclohexene.(ii) $3-$Bromocyclohexene: Elimination leads to $1,3-$cyclohexadiene,which is conjugated and stable.(iii) $3-$Bromocyclohexa$-1,4-$diene: Elimination leads to benzene,which is highly stable due to aromaticity. This is the fastest reaction.(iv) Bromobenzene: The $C-Br$ bond has partial double bond character due to resonance,making it very difficult to break.Thus,the order of ease of dehydrohalogenation is $(iii) > (ii) > (i) > (iv)$.

Arrange the following in order of ease of dehydrohalogenation:
$(i)$ Bromocyclohexane
(ii) $3-$Bromocyclohexene
(iii) $3-$Bromocyclohexa$-1,4-$diene
(iv) Bromobenzene

Similar Questions

Increasing the concentration of an electrophile (substrate) in a typical $S_N2$ reaction by a factor of $3$ and the concentration of the nucleophile by a factor of $3$ will change the reaction rate to

Which reaction results in the formation of a pair of enantiomers?

$C_6H_6 + CH_3CH_2CH_2Cl + AlCl_3 \to X$ (Major product)
$X$ (Major product) $\xrightarrow{HNO_3 + H_2SO_4} Y$ (Major product) $\xrightarrow{Sn + HCl} Z$ $\xrightarrow{H_2SO_4 + SO_3} W$
$W$ is

Conversion of $I$ to $II$:

The reaction of $4-methylcyclohexyl$ halide with $OH^-$ via the $S_N2$ mechanism produces $A$. Identify $A$.

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Arrange the following in order of ease of dehydrohalogenation:$(i)$ Bromocyclohexane(ii) $3-$Bromocyclohexene(iii) $3-$Bromocyclohexa$-1,4-$diene(iv) Bromobenzene