Question

$1-phenyl-2-chloropropane$ on treating with alc. $KOH$ gives mainly:

• A. $1$-phenylpropene
• B. $2$-phenylpropene
• C. $1$-phenylpropane-$2$-ol
• D. $1$-phenylpropan-$1$-ol

Answer 1

The correct option is A $1$-phenylpropene

$1$−phenyl−$2$−chloropropane on treating with alc. $KOH$ gives mainly $1$−phenylpropene. This is dehydrochlorination reaction.
The double bond in the product is in conjugation with benzene ring.$1$−phenyl−$2$−chloropropane.