Match the reactants in Column-$(I)$ with the products formed in Column-$(II)$.
Column-$(I)$ (Reactants) Column-$(II)$ (Major Products) $(A)$ $C_6H_5CH_3 + X_2 \xrightarrow{Fe, \text{dark}}$ $(i)$ $C_6H_5CH(Br)CH_3$ $(B)$ $C_6H_5NH_2 \xrightarrow{NaNO_2, HX, 273-278 \ K}$ $(ii)$ $C_6H_5N_2^+X^-$ $(C)$ $C_6H_5N_2^+X^- \xrightarrow{Cu_2X_2}$ $(iii)$ $p-X-C_6H_4CH_3 + o-X-C_6H_4CH_3$ $(D)$ $C_6H_5CH_2CH_3 \xrightarrow{Br_2, \Delta \text{ or } UV \text{ light}}$ $(iv)$ $C_6H_5X$
| Column-$(I)$ (Reactants) | Column-$(II)$ (Major Products) |
|---|---|
| $(A)$ $C_6H_5CH_3 + X_2 \xrightarrow{Fe, \text{dark}}$ | $(i)$ $C_6H_5CH(Br)CH_3$ |
| $(B)$ $C_6H_5NH_2 \xrightarrow{NaNO_2, HX, 273-278 \ K}$ | $(ii)$ $C_6H_5N_2^+X^-$ |
| $(C)$ $C_6H_5N_2^+X^- \xrightarrow{Cu_2X_2}$ | $(iii)$ $p-X-C_6H_4CH_3 + o-X-C_6H_4CH_3$ |
| $(D)$ $C_6H_5CH_2CH_3 \xrightarrow{Br_2, \Delta \text{ or } UV \text{ light}}$ | $(iv)$ $C_6H_5X$ |
(A-III, B-II, C-IV, D-I) $(A \rightarrow iii)$: Electrophilic aromatic substitution of toluene with $X_2$ in the presence of $Fe$ (dark) gives ortho and para halo-substituted toluene.
$(B \rightarrow ii)$: Aniline reacts with $NaNO_2$ and $HX$ at $273-278 \ K$ to form benzene diazonium salt.
$(C \rightarrow iv)$: Sandmeyer reaction of benzene diazonium salt with $Cu_2X_2$ yields aryl halide $(C_6H_5X)$.
$(D \rightarrow i)$: Free radical bromination of ethylbenzene with $Br_2$ under light/heat occurs at the benzylic position to form $1$-bromo-$1$-phenylethane.
$(B \rightarrow ii)$: Aniline reacts with $NaNO_2$ and $HX$ at $273-278 \ K$ to form benzene diazonium salt.
$(C \rightarrow iv)$: Sandmeyer reaction of benzene diazonium salt with $Cu_2X_2$ yields aryl halide $(C_6H_5X)$.
$(D \rightarrow i)$: Free radical bromination of ethylbenzene with $Br_2$ under light/heat occurs at the benzylic position to form $1$-bromo-$1$-phenylethane.
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Similar Questions
Correct statements regarding alkyl halides ($R-X$) among the following are:
A. Alcohol being less polar solvent as compared to water, alcoholic $KOH$ favours elimination reaction with $R-X$.
B. Order of reactivity towards $S_N1$ mechanism is $C_6H_5-CH_2-Cl > C_6H_5-CHCl-C_6H_5$.
C. Non substituted aryl halides exhibit properties similar to alkyl halides.
D. Vinyl chloride is an example of haloalkene and allyl chloride is an example of haloalkyne.
E. $R-Cl$ can be prepared by reacting $R-OH$ with $SOCl_2$ but $Ar-Cl$ cannot be prepared by reacting $Ar-OH$ with $SOCl_2$.
Choose the correct answer from the options given below:
Match the reactions in Column-$I$ with their mechanisms in Column-$II$.
Column-$I$ (Reaction) Column-$II$ (Mechanism) $(A)$ $OH^- + CH_3Cl \to HOCH_3 + Cl^-$ $(1)$ $S_N2$ mechanism $(B)$ $(CH_3)_3CBr + OH^- \to (CH_3)_3COH + Br^-$ $(2)$ $S_E2$ aromatic $(C)$ $CH_3CH_2Br \xrightarrow[ethanol]{KOH} CH_2 = CH_2$ $(3)$ $S_N1$ mechanism $(D)$ $C_6H_6 + Br_2 \xrightarrow{Fe} C_6H_5Br + HBr$ $(4)$ $\beta$-elimination (dehydrohalogenation)
| Column-$I$ (Reaction) | Column-$II$ (Mechanism) |
| $(A)$ $OH^- + CH_3Cl \to HOCH_3 + Cl^-$ | $(1)$ $S_N2$ mechanism |
| $(B)$ $(CH_3)_3CBr + OH^- \to (CH_3)_3COH + Br^-$ | $(2)$ $S_E2$ aromatic |
| $(C)$ $CH_3CH_2Br \xrightarrow[ethanol]{KOH} CH_2 = CH_2$ | $(3)$ $S_N1$ mechanism |
| $(D)$ $C_6H_6 + Br_2 \xrightarrow{Fe} C_6H_5Br + HBr$ | $(4)$ $\beta$-elimination (dehydrohalogenation) |
Difficult
View SolutionConsider the following sequence of reactions:
Nitrobenzene $\xrightarrow[(ii) NaNO_2, HCl, 0^{\circ}C]{(i) Sn + HCl} \text{Benzenediazonium chloride}$ $\xrightarrow{(iii) Cu_2Cl_2} \text{Chlorobenzene}$ $\xrightarrow{(iv) Na, \text{Ether}} A$
Molar mass of the product formed $(A)$ is $.............. \ g \ mol^{-1}$.
Nitrobenzene $\xrightarrow[(ii) NaNO_2, HCl, 0^{\circ}C]{(i) Sn + HCl} \text{Benzenediazonium chloride}$ $\xrightarrow{(iii) Cu_2Cl_2} \text{Chlorobenzene}$ $\xrightarrow{(iv) Na, \text{Ether}} A$
Molar mass of the product formed $(A)$ is $.............. \ g \ mol^{-1}$.
DifficultJEE MAIN 2025
View SolutionArrange the following reactants in increasing order of reactivity towards $S_{N^1}$ solvolysis reaction with methanol.
Difficult
View SolutionIdentify the major products $(P)$ and $(Q)$ respectively for the given reaction.
Difficult
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