An amino acid may be represented by general formula $\begin{matrix}
R\,\,\,\,\,\,\,\, \\
|\,\,\,\,\,\,\,\, \\
{{H}_{2}}N-CH-COOH \\
\end{matrix}$ If $R = -CH_2C_6H_5$ then it is phenylalanine $(Phe)$ and if $R = CH_3$ then it is alanine $(Ala)$. Find the sequence of reagents from those given below to synthesize $Phe- Ala$

$(1)$ $\begin{matrix}
C{{H}_{3}} \\
|\,\,\,\,\,\, \\
ZNH\,C\,HC{{O}_{2}}H \\
\end{matrix}$ $(2)$ $\begin{matrix}
C{{H}_{3}}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
{{H}_{2}}N\,C\,HC{{O}_{2}}C{{H}_{2}}{{C}_{6}}{{H}_{5}} \\
\end{matrix}$

$(3)$ $\begin{matrix}
\,\,\,\,\,\,\,\,\,\,\,\,C{{H}_{3}}{{C}_{6}}{{H}_{5}} \\
|\,\,\,\,\, \\
ZNH\,C\,HC{{O}_{2}}H \\
\end{matrix}$ $(4)$ $\begin{matrix}
C{{H}_{2}}{{C}_{6}}{{H}_{5}}\,\,\,\,\, \\
|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
{{H}_{2}}N\,CHC{{O}_{2}}C{{H}_{2}}{{C}_{6}}{{H}_{5}} \\
\end{matrix}$

Q: An amino acid may be represented by general formula $\begin{matrix} R\,\,\,\,\,\,\,\, \\ |\,\,\,\,\,\,\,\, \\ {{H}_{2}}N-CH-COOH \\ \end{matrix}$ If $R = -CH_2C_6H_5$ then it is phenylalanine $(Phe)$ and if $R = CH_3$ then it is alanine $(Ala)$. Find the sequence of reagents from those given below to synthesize $Phe- Ala$ $(1)$ $\begin{matrix} C{{H}_{3}} \\ |\,\,\,\,\,\, \\ ZNH\,C\,HC{{O}_{2}}H \\ \end{matrix}$ $(2)$ $\begin{matrix} C{{H}_{3}}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\ |\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\ {{H}_{2}}N\,C\,HC{{O}_{2}}C{{H}_{2}}{{C}_{6}}{{H}_{5}} \\ \end{matrix}$ $(3)$ $\begin{matrix} \,\,\,\,\,\,\,\,\,\,\,\,C{{H}_{3}}{{C}_{6}}{{H}_{5}} \\ |\,\,\,\,\, \\ ZNH\,C\,HC{{O}_{2}}H \\ \end{matrix}$ $(4)$ $\begin{matrix} C{{H}_{2}}{{C}_{6}}{{H}_{5}}\,\,\,\,\, \\ |\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\ {{H}_{2}}N\,CHC{{O}_{2}}C{{H}_{2}}{{C}_{6}}{{H}_{5}} \\ \end{matrix}$

b $(b)$ $NH _2$ Group from $(2)$ reacts with $COOH$ from $(3)$ to form phe- ala Ans is $(C)$

Question

An amino acid may be represented by general formula $\begin{matrix}
R\,\,\,\,\,\,\,\, \\
|\,\,\,\,\,\,\,\, \\
{{H}_{2}}N-CH-COOH \\
\end{matrix}$ If $R = -CH_2C_6H_5$ then it is phenylalanine $(Phe)$ and if $R = CH_3$ then it is alanine $(Ala)$. Find the sequence of reagents from those given below to synthesize $Phe- Ala$

$(1)$ $\begin{matrix}
C{{H}_{3}} \\
|\,\,\,\,\,\, \\
ZNH\,C\,HC{{O}_{2}}H \\
\end{matrix}$ $(2)$ $\begin{matrix}
C{{H}_{3}}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
{{H}_{2}}N\,C\,HC{{O}_{2}}C{{H}_{2}}{{C}_{6}}{{H}_{5}} \\
\end{matrix}$

$(3)$ $\begin{matrix}
\,\,\,\,\,\,\,\,\,\,\,\,C{{H}_{3}}{{C}_{6}}{{H}_{5}} \\
|\,\,\,\,\, \\
ZNH\,C\,HC{{O}_{2}}H \\
\end{matrix}$ $(4)$ $\begin{matrix}
C{{H}_{2}}{{C}_{6}}{{H}_{5}}\,\,\,\,\, \\
|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
{{H}_{2}}N\,CHC{{O}_{2}}C{{H}_{2}}{{C}_{6}}{{H}_{5}} \\
\end{matrix}$

A$1$ and $2$
B$1$ and $4$
C$2$ and $3$
D$3$ and $4$

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