question_answer

Identify the major products P, Q and R in the following sequence of reactions: [NEET - 2018]

A)             P                      Q                     R

B)

C)

D)

Correct Answer: D

Solution :

[d]

\[\overset{\delta +}{\mathop{\text{C}{{\text{H}}_{\text{3}}}\text{-}\underset{\begin{align}   & \vdots  \\  & \vdots  \\  & \text{Cl} \\  & \vdots  \\  & \vdots  \\  & ^{\delta -}\text{AlC}{{\text{l}}_{\text{3}}} \\ \end{align}}{\mathop{\text{CH}}}\,\text{-C}{{\text{H}}_{\text{3}}}}}\,\xleftarrow{\overset{1,2-\text{H}}{\mathop{\text{Shift}}}\,}\underset{(\text{Incipient carbocation)}}{\mathop{C{{H}_{3}}C{{H}_{2}}\overset{\delta +}{\mathop{C{{H}_{2}}}}\,\cdot \cdot \cdot \cdot Cl\cdot \cdot \cdot \cdot \overset{\delta -}{\mathop{AlC{{l}_{3}}}}\,}}\,\]

Now,