Question

Following is the substitution reaction in which $-CN$ replaces $-Cl$
$R - CI + KCN \overset{\Delta}{\rightarrow} R - CN + KCI$
To obtain propane nitrile, $R-Cl$ should be:

• A. chloroethane
• B. $1$-chloropropane
• C. chloromethane
• D. $2$-chloropropane

Answer 1

Answer: (A)

chloroethane

Answer 2

$C _{2} H _{5}- Cl + \underset{(alc)}{KCN} \stackrel{\Delta}{\longrightarrow} C _{2} H _{5}- CN + KCl$
Hence, to obtain propanenitrile, $R- Cl$ should be chloroethane.