A) \[R-\underset{\begin{smallmatrix} | \\ H \end{smallmatrix}}{\overset{\begin{smallmatrix} H \\ | \end{smallmatrix}}{\mathop{{{N}^{+}}}}}\,-S{{O}_{2}}{{C}_{6}}{{H}_{5}}O{{H}^{-}}\]
B) \[R-{{N}^{-}}S{{O}_{2}}{{C}_{6}}{{H}_{5}}{{K}^{+}}\]
C) \[{{C}_{6}}{{H}_{5}}S{{O}_{2}}N{{H}_{2}}\]
D) \[R-NH-S{{O}_{2}}-{{C}_{6}}{{H}_{5}}\]
Correct Answer: B
Solution :
\[\underset{\begin{smallmatrix} Benzene\,sulphonyl \\ chloride \end{smallmatrix}}{\mathop{{{C}_{6}}{{H}_{5}}S{{O}_{2}}Cl}}\,+RN{{H}_{2}}\to \underset{\begin{smallmatrix} N-alkyl\,benzene \\ sulphonomide \end{smallmatrix}}{\mathop{RNHS{{O}_{2}}{{C}_{6}}{{H}_{5}}}}\,\xrightarrow[{}]{KOH}\]\[\underset{sa\operatorname{lub}le\,in\,KOH}{\mathop{R-NHS{{O}_{2}}{{C}_{6}}{{H}_{5}}}}\,\]
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