Draw the products of each reaction.

(a)

(b)

(c)

(d)

Substitution nucleophilic biomolecular reaction is a one-step reaction and doesn’t involve any intermediate.It is a type of reaction where one side the bond breaks and formation takes place on the other side.

(a) When bromoacetic acid reacts with excess ${\mathrm{NH}}_3$,it ammonium salt.

Formation of ammonium salt

(b) When diethyl acetamidomalonate is treated with ${\left({\mathrm{CH}}_3\right)}_2\mathrm{CHCl}$, and undergoes heat and hydrolysis, valine is formed.

Formation of valine

(c) When 2-methyl butanol is treated with ${\mathrm{NH}}_4\mathrm{Cl},\mathrm{NaCN}$and undergoes hydrolysis isoleucine is formed.

Formation of isoleucine

(d) When diethyl acetamidomalonate is treated with $\mathrm{NaOEt},{\mathrm{BrCH}}_2{\mathrm{CO}}_2\mathrm{Et}$,and undergoes hydrolysis and heat,2-aminobutanedioic acids are formed.

Formation of 2-aminobutanedioic acid