Which of the following reactions occurs wiyh reacemization?

Options

A. `CH_(3)CH_(2)CHH(OH)CH_(2)Br+OH^(-)rarrCH_(3)CH_(2)CH(OH)CH_(2)OH+Br^(-)`
B. `CH_(3)CH_(2)CH=CH =CH_(2)+D_(2)overset(catalyst)rarrCH_(3)CH_(2)CH(D)CH_(2)D`
C. `CH_(3)CH_(2)CH(OH)CH(CH_(3))_(2)+CH_(3)COCIrarrCH_(3)CH_(2)CH(OCOCH_(3))CH(CH_(3))_(2)+HCI`
D. `CH_(3)CH(NH_(2))COOH+NaOHrarrCH_(3)CH_(2)(NH_(2))COO^(-)Na^(+)+H_(2)O`

Answer

B

Explanation

The product has a chiral center `(D` being sufficiently different from `H)`, both enantiomers are formed in equal amounts because `D_(2)` adds to the enantiotopic faces of the alkene equally.
Reactions `(1),(3)` and `(4)` occur with retention because no bond-breacking occurs at the chiral carbon.
To answers this, we need to draw out the structurnes of the reactants and the products and identify and chiral centers.