a
\({\text{C}}{{\text{H}}_{\text{3}}}{\text{CON}}{{\text{H}}_{\text{2}}}{\text{ + B}}{{\text{r}}_{\text{2}}}{\text{ + 4KOH }}\mathop {\xrightarrow{{}}}\limits_{ - 2{H_2}O} \,{\text{RN}}{{\text{H}}_{\text{2}}}{\text{ + 2KBr + 2}}{{\text{K}}_{\text{2}}}{\text{C}}{{\text{O}}_{\text{3}}}\)