Which sequence of reagents is useful for the conversion of $C_6H_5CH_2CH_3$ to $C_6H_5CH=CH_2$?
- A$SOCl_2, H_2O$
- B$SO_2Cl_2, alc. KOH$
- C$Cl_2 / hv, H_2O$
- D$NBS, alc. KOH$
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Which of the following is least reactive towards $SN^{1}$ reactions?
Benzyl bromide on reaction with magnesium in the presence of dry ether gives $'X'$. $'X'$ on reaction with ethanol gives $'Y'$. Then the compound $Y$ is
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View SolutionThe decreasing order of reactivity towards dehydrohalogenation $(E_1)$ reaction of the following compounds is:
$(A)$ $CH_3CH_2CH_2CH_2Cl$
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$(A)$ $CH_3CH_2CH_2CH_2Cl$
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$(C)$ $CH_3CH_2CHClCH_3$
$(D)$ $CH_2=CHCHClCH_3$
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View SolutionWhich compound might be synthesized by the $S_N2$ displacement of an alkyl-halide?
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View SolutionWhich of the following compounds is most reactive towards $S_N1$ reaction?
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