Question

Which of the following is true about the product?

• A. It is also (+) laevorotatory
• B. Both (+) and (-) forms are obtained in equal amount
• C. It is having 'S' configuration for chiral carbon
• D. It is having R configuration for chiral carbon.

Answer 1

Answer: (D)

It is having R configuration for chiral carbon.

The name of this reaction is Beckmann rearrangement and it is an intramolecular rearrangement reaction. In case of intramolecular rearrangement, there is retention of configuration. Hence the product is also having '$R$' configuration.