Question
Butanonitrile may be prepared by heating :
A.
Propyl alcohol with $$KCN$$
B.
Butyl alcohol with $$KCN$$
C.
Butyl chloride with $$KCN$$
D.
Propyl chloride with $$KCN$$
Answer :
Propyl chloride with $$KCN$$
Solution :
TIPS/Formulae : In the formation of cyanohydrin number of carbon atoms in parent chain increases by one.
\[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}Cl+alc.\,KCN\xrightarrow{{{100}^{\circ }}C}C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}CN+KCl\]