What are $\mathrm{A}, \mathrm{B}$ and $\mathrm{C}$ in the following reaction sequence? Ethene…

What are $\mathrm{A}, \mathrm{B}$ and $\mathrm{C}$ in the following reaction sequence? Ethene $\xrightarrow{\mathrm{HBr}} \mathrm{A} \xrightarrow{\mathrm{KCN}} \mathrm{B} \xrightarrow{\mathrm{H}^{\oplus} / \mathrm{H}_2 \mathrm{O}} \mathrm{C}$
  1. $\begin{array}{ccc} \underline{\mathrm{A}} & \underline{\mathrm{B}} & \underline{\mathrm{C}} \\ \mathrm{CH}_3 \mathrm{CH}_2 \mathrm{Br} & \mathrm{CH}_3 \mathrm{CH}_2 \mathrm{CN} & \mathrm{CH}_3 \mathrm{CH}_2 \mathrm{CO}_2 \mathrm{H} \\ \end{array}$
  2. $\begin{array}{ccc} \underline{\mathrm{A}} & \underline{\mathrm{B}} & \underline{\mathrm{C}} \\ \mathrm{CH}_2=\mathrm{CHBr} & \mathrm{CH}_3 \mathrm{CH}_2 \mathrm{CN} & \mathrm{CH}_3 \mathrm{CO}_2 \mathrm{H} \\ \end{array}$
  3. $\begin{array}{ccc} \underline{\mathrm{A}} & \underline{\mathrm{B}} & \underline{\mathrm{C}} \\ \mathrm{CH}_3 \mathrm{CH}_2 \mathrm{Br} & \mathrm{CH}_3 \mathrm{CH}_2 \mathrm{NC} & \mathrm{CH}_3 \mathrm{CH}_2 \mathrm{NHCH}_3 \\ \end{array}$
  4. $\begin{array}{ccc} \underline{\mathrm{A}} & \underline{\mathrm{B}} & \underline{\mathrm{C}} \\ \mathrm{CH}_2=\mathrm{CHBr} & \mathrm{CH}_2=\mathrm{CHCN} & \mathrm{CH}_2=\mathrm{CHCOOH} \end{array}$

Solution

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Asked in: AP EAMCET 2017 (25 Apr Shift 1)

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