The Hofmann bromamide degradation reaction is a classic method used to convert a primary amide into a primary amine with one fewer carbon atom.In this process, an amide reacts with bromine in an aqueous or ethanolic solution of sodium hydroxide (or potassium hydroxide).The general chemical equation is:$R-\mathrm{CONH}_2 + \mathrm{Br}_2 + 4\mathrm{NaOH} \rightarrow R-\mathrm{NH}_2 + \mathrm{Na_2CO_3} + 2\mathrm{NaBr} + 2\mathrm{H_2O}$(i) $R-\overset{\mathrm{O}}{\overset{\parallel}{\mathrm{C}}}-NH_2$ : This is the primary amide (starting material).(ii) NaOH : The strong base required to deprotonate the amide and drive the rearrangement.(iii) $\mathrm{Br}_2$ : The halogen that reacts with the amide to form an N-bromoamide intermediate.(iv) $CHCl_3$ : This is chloroform, which is notably not used here. Chloroform is a key reagent in the Carbylamine reaction, not the Hofmann degradation.