Question

What is/are the correct option(s) about the reaction given below and the product formed?

• A. There is inversion of configuration of carbon 1 and 2 in the product
• B. There is inversion of configuration of carbon 1 but retention of carbon 2 in the product
• C. The product is
  
• D. There is inversion of configuration of carbon 2 but retention of carbon 1 in the product

Answer 1

Answer: (C), (D)

The correct options are
C The product is

D There is inversion of configuration of carbon 2 but retention of carbon 1 in the product

$C{H}_{3}MgBr$ attacks from less hindered side which leads to epoxy ring opening.


Due to change in CIP ordering there is inversion of configuration at C2.