Match the reaction in Column-$I$ with the mechanism in Column-$II$.
Column-$I$ (Reaction) Column-$II$ (Mechanism) $A$. $CH_3OCH_2CH_3 + HI \to CH_3I + CH_3CH_2OH$ $i$. $S_{E}2$ Aromatic $B$. $(CH_3)_3COCH_3 + HI \to CH_3OH + (CH_3)_3CI$ $ii$. $S_{N}1$ $C$. $C_6H_5OCH_3 + Br_2(CH_3COOH) \to p$-Bromoanisole $iii$. Elimination $(\beta)$ $D$. $CH_3CH_2OH + H_2SO_4 (443 \ K) \to CH_2=CH_2$ $iv$. $S_{N}2$
| Column-$I$ (Reaction) | Column-$II$ (Mechanism) |
| $A$. $CH_3OCH_2CH_3 + HI \to CH_3I + CH_3CH_2OH$ | $i$. $S_{E}2$ Aromatic |
| $B$. $(CH_3)_3COCH_3 + HI \to CH_3OH + (CH_3)_3CI$ | $ii$. $S_{N}1$ |
| $C$. $C_6H_5OCH_3 + Br_2(CH_3COOH) \to p$-Bromoanisole | $iii$. Elimination $(\beta)$ |
| $D$. $CH_3CH_2OH + H_2SO_4 (443 \ K) \to CH_2=CH_2$ | $iv$. $S_{N}2$ |
(A-IV, B-II, C-I, D-III) The correct matches are as follows:
$A \to iv$: The reaction of primary alkyl ethers with $HI$ proceeds via an $S_{N}2$ mechanism.
$B \to ii$: The reaction of ethers containing a tertiary alkyl group with $HI$ proceeds via an $S_{N}1$ mechanism because a stable carbocation is formed.
$C \to i$: The bromination of anisole is an electrophilic aromatic substitution ($S_{E}2$ Aromatic) reaction.
$D \to iii$: The dehydration of ethanol to ethene in the presence of concentrated $H_2SO_4$ at $443 \ K$ is a $\beta$-elimination reaction.
Therefore,the correct sequence is: $A-iv, B-ii, C-i, D-iii$.
$A \to iv$: The reaction of primary alkyl ethers with $HI$ proceeds via an $S_{N}2$ mechanism.
$B \to ii$: The reaction of ethers containing a tertiary alkyl group with $HI$ proceeds via an $S_{N}1$ mechanism because a stable carbocation is formed.
$C \to i$: The bromination of anisole is an electrophilic aromatic substitution ($S_{E}2$ Aromatic) reaction.
$D \to iii$: The dehydration of ethanol to ethene in the presence of concentrated $H_2SO_4$ at $443 \ K$ is a $\beta$-elimination reaction.
Therefore,the correct sequence is: $A-iv, B-ii, C-i, D-iii$.
Explore More
Similar Questions
When phenol is treated with $CHCl_3$ and $NaOH$ followed by acidification,salicylaldehyde is produced. Which of the following intermediates is involved in the above reaction?
Medium
View SolutionMatch the chemical conversions in List-$I$ with the appropriate reagents in List-$II$ and select the correct answer using the code given below the lists:
List-$I$:
$P$. $tert$-butyl chloride $\rightarrow$ isobutylene
$Q$. Sodium $tert$-butoxide $\rightarrow$ $tert$-butyl ethyl ether
$R$. $1$-methylcyclopentene $\rightarrow$ $1$-methylcyclopentanol
$S$. $1$-methylcyclopentene $\rightarrow$ $2$-methylcyclopentanol (trans-isomer)
List-$II$:
$1$. $(i) \ Hg(OAc)_2; (ii) \ NaBH_4$
$2$. $NaOEt$
$3$. $EtBr$
$4$. $(i) \ BH_3; (ii) \ H_2O_2/NaOH$
Codes: $P \quad Q \quad R \quad S$
List-$I$:
$P$. $tert$-butyl chloride $\rightarrow$ isobutylene
$Q$. Sodium $tert$-butoxide $\rightarrow$ $tert$-butyl ethyl ether
$R$. $1$-methylcyclopentene $\rightarrow$ $1$-methylcyclopentanol
$S$. $1$-methylcyclopentene $\rightarrow$ $2$-methylcyclopentanol (trans-isomer)
List-$II$:
$1$. $(i) \ Hg(OAc)_2; (ii) \ NaBH_4$
$2$. $NaOEt$
$3$. $EtBr$
$4$. $(i) \ BH_3; (ii) \ H_2O_2/NaOH$
Codes: $P \quad Q \quad R \quad S$
DifficultIIT 2013
View SolutionIn the given diol,which of the following statements is correct regarding the acidity of the hydroxyl groups at $C_2$ and $C_5$?
Difficult
View SolutionMatch List-$I$ with List-$II$.
List-$I$ (Test) List-$II$ (Observation) $A$. $Br_2$ water test $I$. Yellow orange or orange red precipitate formed $B$. Ceric ammonium nitrate test $II$. Reddish orange colour disappears $C$. Ferric chloride test $III$. Red colour appears $D$. $2,4-DNP$ test $IV$. Blue,Green,violet or Red colour appear
Choose the correct answer from the options given below:
| List-$I$ (Test) | List-$II$ (Observation) |
| $A$. $Br_2$ water test | $I$. Yellow orange or orange red precipitate formed |
| $B$. Ceric ammonium nitrate test | $II$. Reddish orange colour disappears |
| $C$. Ferric chloride test | $III$. Red colour appears |
| $D$. $2,4-DNP$ test | $IV$. Blue,Green,violet or Red colour appear |
Choose the correct answer from the options given below:
Match the common names of the ethers given in Column $(I)$ with their structures in Column $(II)$ and their $\text{IUPAC}$ names in Column $(III)$.
Column $(I)$ Column $(II)$ Column $(III)$ $(A)$ Methyl isopropyl ether $(1)$ ${C_6}{H_5}O{(CH_2)_6}CH_3$ $(i)$ $2$-Methoxypropane $(B)$ Phenyl isopentyl ether $(2)$ $CH_3-O-CH(CH_3)_2$ $(ii)$ Methoxyethane $(C)$ Heptyl phenyl ether $(3)$ ${C_6}{H_5}-O-CH_2CH_2CH(CH_3)_2$ $(iii)$ $1$-Phenoxyheptane $(D)$ Ethyl methyl ether $(4)$ $CH_3CH_2-O-CH_3$ $(iv)$ $1$-Methoxy$-3-$methylbutane (or $3$-Methylbutoxybenzene)
| Column $(I)$ | Column $(II)$ | Column $(III)$ |
|---|---|---|
| $(A)$ Methyl isopropyl ether | $(1)$ ${C_6}{H_5}O{(CH_2)_6}CH_3$ | $(i)$ $2$-Methoxypropane |
| $(B)$ Phenyl isopentyl ether | $(2)$ $CH_3-O-CH(CH_3)_2$ | $(ii)$ Methoxyethane |
| $(C)$ Heptyl phenyl ether | $(3)$ ${C_6}{H_5}-O-CH_2CH_2CH(CH_3)_2$ | $(iii)$ $1$-Phenoxyheptane |
| $(D)$ Ethyl methyl ether | $(4)$ $CH_3CH_2-O-CH_3$ | $(iv)$ $1$-Methoxy$-3-$methylbutane (or $3$-Methylbutoxybenzene) |
Medium
View SolutionVedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo