(D) The first step is the electrophilic addition of $HCl$ to the double bond of the cyclohexene ring. According to Markovnikov's rule,the $H^+$ adds t

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$A$ = $1-$methoxy$-2-$chloro$-4-$nitrocyclohexane,$B$ = $1-$methoxy$-2-$iodo$-4-$nitrocyclohexane (with different substitution pattern)

(D) The first step is the electrophilic addition of $HCl$ to the double bond of the cyclohexene ring. According to Markovnikov's rule,the $H^+$ adds to the carbon with more hydrogens,and $Cl^-$ adds to the other carbon,forming the chloro-substituted product $[A]$.In the second step,the reaction with $NaI$ in dry acetone is a Finkelstein reaction,which is an $S_N2$ substitution where the chlorine atom is replaced by an iodine atom to form the iodo-substituted product $[B]$.

Class 12 Chemistry Haloalkanes and Haloarenes Properties of Haloalkanes

Medium

Identify $A$ and $B$ in the chemical reaction.

JEE MAIN 2021 All JEE MAIN

A
$A$ = $1-$methoxy$-2-$chloro$-4-$nitrocyclohexane,$B$ = $1-$methoxy$-2-$chloro$-4-$nitrocyclohexane
B
$A$ = $1-$methoxy$-2-$chloro$-4-$nitrocyclohexane,$B$ = $1-$methoxy$-2-$iodo$-4-$nitrocyclohexane
C
$A$ = $1-$methoxy$-2-$chloro$-4-$nitrocyclohexane,$B$ = $1-$iodo$-2-$chloro$-4-$nitrocyclohexane
D
$A$ = $1-$methoxy$-2-$chloro$-4-$nitrocyclohexane,$B$ = $1-$methoxy$-2-$iodo$-4-$nitrocyclohexane (with different substitution pattern)

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Haloalkanes and Haloarenes

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Properties of Haloalkanes

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The correct order of $S_N1$ reactivity for the following compounds is:
$(I)$ $CH_3CH_2CH_2CH_2Br$
$(II)$ $CH_2=CH-CH(Br)CH_3$
$(III)$ $CH_3CH_2CH(Br)CH_3$

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What is the major product of the following reaction?
$H_2C = CH - CH_2 - OH \xrightarrow[excess]{HBr} \text{Product}$

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$A$ primary alkyl halide $(a)$ with molecular formula $C_{4}H_{9}Br$ reacts with alcoholic $KOH$ to give compound $(b)$. Compound $(b)$ reacts with $HBr$ to give compound $(c)$,which is an isomer of $(a)$. When $(a)$ reacts with sodium metal,it gives compound $(d)$ with molecular formula $C_{8}H_{18}$,which is different from the compound formed when $n$-butyl bromide reacts with sodium. Identify the structural formula of $(a)$ and write the equations for all the reactions.

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Which of the following haloalkanes is most reactive towards nucleophilic substitution reactions?

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Identify the correct reactivity order for $E_2$ reaction with alc. $KOH$ for the following compounds:
$(i)$ $8$-chlorocycloocta-$1,3,5$-triene
(ii) $3$-chlorocyclohexa-$1,4$-diene
(iii) $3$-chlorocyclobutene

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Identify $A$ and $B$ in the chemical reaction.

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The correct order of $S_N1$ reactivity for the following compounds is:$(I)$ $CH_3CH_2CH_2CH_2Br$$(II)$ $CH_2=CH-CH(Br)CH_3$$(III)$ $CH_3CH_2CH(Br)CH_3$

What is the major product of the following reaction? $H_2C = CH - CH_2 - OH \xrightarrow[excess]{HBr} \text{Product}$

Which of the following haloalkanes is most reactive towards nucleophilic substitution reactions?

Identify the correct reactivity order for $E_2$ reaction with alc. $KOH$ for the following compounds:$(i)$ $8$-chlorocycloocta-$1,3,5$-triene(ii) $3$-chlorocyclohexa-$1,4$-diene(iii) $3$-chlorocyclobutene

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The correct order of $S_N1$ reactivity for the following compounds is:
$(I)$ $CH_3CH_2CH_2CH_2Br$
$(II)$ $CH_2=CH-CH(Br)CH_3$
$(III)$ $CH_3CH_2CH(Br)CH_3$

What is the major product of the following reaction?
$H_2C = CH - CH_2 - OH \xrightarrow[excess]{HBr} \text{Product}$

Identify the correct reactivity order for $E_2$ reaction with alc. $KOH$ for the following compounds:
$(i)$ $8$-chlorocycloocta-$1,3,5$-triene
(ii) $3$-chlorocyclohexa-$1,4$-diene
(iii) $3$-chlorocyclobutene