JEE Main Chemistry question

*Meso*-dibromobutane on debromination (with Zn) gives [DCE 2009]

(A)*trans*-2-butene
(B)*cis*-2-buteneCorrect
(C)1-butene
(D)1-butyne

Answer: (B)

Solution

Debromination of a vicinal dibromide with Zn is a stereospecific *anti*-elimination. The *meso* (2R,3S) diastereomer of 2,3-dibromobutane, in its reactive anti-periplanar

See the full step-by-step solution

Create a free account to read the complete working, and practise questions like this in a timed test.

Create a free account

Question ID VK-142107