Question

The stereochemistry of the product in the given $S_{N}2$ reaction is:

• A. R,R
• B. R,S
• C. S,S
• D. S,R

Answer 1

Answer: (B), (D)

The correct options are
B R,S
D S,R

Epoxide ring is opened to form cyclohexanol in which alpha H atom is replaced with D atom.

The D atom and OH group have anti configuration as it is the result of $S_{N}2$ attack involving inversion of configuration.

The product is a mixture with R,S and S,R configurations.

Option B and D are correct.