Alkyl Halides and Aryl HalidesMedium
Question
In the following reaction sequence, X and Z respectively are :
Options
A.\ X = {POCl}_{3}$; Z =${CH}_{3}{CH}_{}Br{CH}_{3}$
B.$X = {POCl}_{3};Z = {CH}_{3}{CH}_{2}{CH}_{2} - Br$
C.$\ X = H_{3}{PO}_{3};Z = {CH}_{3}{CH}_{}Br{CH}_{3}$
D.$X = H_{3}{PO}_{3};Z = {CH}_{3}{CH}_{2}{CH}_{2} - Br$
Solution
Sol. [Key Concept: Multi-step organic synthesis — identifying intermediates] 
So,
$$\begin{matrix} & X = {POCl}_{3} \\ & Z = {CH}_{3}{CH}_{2}{CH}_{2}Br \end{matrix}$$
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