What is $(P)$ in the reaction given below? $$ \text { (P) } \xrightarrow[\text { (ii) } \mathrm{H}_3…

What is $(P)$ in the reaction given below? $$ \text { (P) } \xrightarrow[\text { (ii) } \mathrm{H}_3 \mathrm{O}^{+}]{\text {(i) } \mathrm{CH}_3 \mathrm{MgBr}}(R) \xrightarrow[\text { (ii) } \Delta]{\text { (i) dil. } \mathrm{NaOH}} $$ 4-methyl-pent-3-en-2-one
  1. Propanone
  2. Ethanamine
  3. Ethane nitrile
  4. Ethane

Solution

$\begin{aligned} & \mathrm{CH}_3 \mathrm{C} \equiv \mathrm{N} \xrightarrow[\text { (ii) } \mathrm{H}_3 \mathrm{O}^{+}]{\text {(i) } \mathrm{CH}_3 \mathrm{MgBr}} \mathrm{CH}_3-\mathrm{CO}-\mathrm{CH}_3+\mathrm{NH}_3 \\ & (P) \\ & (R) \\ & \text { Ethane nitrile Propanone } \\ & \underset{\mathrm{CH}_3}{\mathrm{CH}_3} \succ \mathrm{C}=\mathrm{O} \xrightarrow[\text { (ii) } \Delta]{\text { (i) Dil. } \mathrm{NaOH}} \mathrm{CH}_3 \underset{\mathrm{CH}_3}{\mathrm{C}}=\mathrm{CH}-\stackrel{\mathrm{C}}{\mathrm{C}}-\mathrm{CH}_3 \\ & \end{aligned}$

Asked in: AP EAMCET 2021 (23 Aug Shift 1)

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