Question
$C_6H_5COOH \xrightarrow{\substack{1.\ NH_3 \\ 2.\ \Delta}} P \xrightarrow{\text{NaOBr}} Q \xrightarrow{\substack{1.\ Conc.\ H_2SO_4 \\ 2.\ heat to 460\ K}} R$
'R' is
$C_6H_5COOH \xrightarrow{\substack{1.\ NH_3 \\ 2.\ \Delta}} P \xrightarrow{\text{NaOBr}} Q \xrightarrow{\substack{1.\ Conc.\ H_2SO_4 \\ 2.\ heat to 460\ K}} R$
'R' is