Question

The racemic-$2,3$-dibromopentane on reaction with $KI$ in acetone gives:

• A. E-Pent-$2$-ene
• B. Z-Pent-$2$-ene
• C. both (A) and (B)
• D. none

Answer 1

The correct option is C both (A) and (B)

Racemic mixture contains both retention and inversion configuration which gives both E & Z forms of alkenes on reaction of vinyl dihalide with $KI$ in acetone.