Question

The compound `1,3`-ibromo`-2-`methy`1` butane, `CH_(3)CHBrCH(CH_(3))CH_(2)Br, `has two dissimilar chiral carbons `(C-2` and `C-3)`. Its four stereoisomers are shown below
I
Which of the following has `(2R, 3R)` designation?
A. `I`
B. `II`
C. `III`
D. `IV`

Answer 1

Correct Answer - D
In order of priority, the four ligands bonded to `C-2` are `CH_(3)CHBr gtCH_(2)Br gtCH_(3) gtH`. On `C-3` they are `Br gt CH(CH_(3))CH_(2)Br gtCH_(3) gtH`.