What is the correct $\mathrm{IUPAC}$ name of the following compound ?

The $\mathrm{IUPAC}$ name for the compound

is:

The racemic mixture of Alanine $$\begin{gathered} \left({\mathrm{CH}}_3-\mathrm{CH}-\mathrm{COOH} \\ \overline{)} \\ {\mathrm{NH}}_2\right) \end{gathered}$$can be resolved by using,

($1$) $(+)-2$ -Butanol

($2$) $\left(\mathrm{\ell }\right)-2$ -Chlorobutanoic acid 

($3$) $\left(\mathrm{土}\right) -2$-Butanol

($4$) $(\mathrm{d\ell }mix)-2-$ Chlorobutanoic acid

Product $\text{'}\mathrm{A}\text{'}$ in above reaction is:

The $\mathrm{IUPAC}$ name of the following compound is

The $\mathrm{IUPAC}$ name of the following compound is