Question

In the following sequence of reaction, the major products B and C respectively are :

• A.
• B.
• C.
• D.

Answer 1

The Correct Option is A

The sequence of reactions is analyzed step-by-step:

1. Reaction 1:

A cyclic substrate containing chlorine and bromine substituents undergoes a Wurtz reaction with sodium (Na) in diethyl ether (Et₂O). This process removes two halogen atoms and forms a new carbon-carbon bond, resulting in a ring structure with two additional carbon atoms.

1. Reaction 2:

Intermediate compound A reacts with magnesium (Mg) in diethyl ether to generate a Grignard reagent (RMgX).

1. Reaction 3:

The Grignard reagent reacts with D₂O, substituting the MgBr group with a deuterium atom (D) to produce compound B, a deuterated hydrocarbon.

1. Reaction 4:

Simultaneously, compound A reacts via a CoF₂-catalyzed process to yield compound C. CoF₂ acts as a catalyst, potentially indicating the formation of a fluorinated derivative or related activity.

Based on this analysis, compound B is identified as deuterated cyclopropane, and compound C is a product modified by the CoF₂ catalyst. The major products B and C correspond to the structures presented in the correct answer option.