In organic chemistry, different reactions are often classified based on the type of halogen substitution or exchange that occurs. Recognizing these patterns will help identify the correct type of reaction.
To match the reactions from List I with their corresponding names in List II, let's analyze each case:
(A) The compound in List I is \(\text{C}_6\text{H}_4\text{Cl}\text{CH}_3\text{Cl}.\) This is a case of the Wurtz reaction, which involves halogenated alkyl compounds reacting with sodium metal to form alkyl chains. This matches the reaction in List II as: Correct Match: A – II Wurtz Fitting reaction.
(B) The compound in List I is a chlorobenzene \(\text{C}_6\text{H}_5\text{Cl}\). The reaction here involves chlorobenzene and sodium metal, which is characteristic of the Fitting reaction, where aromatic halides are involved. Hence, the correct match is: Correct Match: B – I Fitting reaction.
(C) The compound in List I is \(\text{C}_6\text{H}_4\text{Cl}\) with a nitro group \(\text{C}_6\text{H}_4\text{NO}_2\text{Cl}\). This type of reaction is the Sandmeyer reaction, which is used to replace halides (like chlorine) with other groups, especially when the aromatic compound has a nitro group, as in this case. Therefore, the correct match is: Correct Match: C – IV Sandmeyer reaction
(D) The compound in List I is \(\text{C}_2\text{H}_5\text{Cl}\) with sodium iodide. This is a typical example of a Finkelstein reaction, which involves the exchange of halides. In this case, chlorine is replaced by iodine in the presence of sodium iodide. Thus, the correct match is: Correct Match: D – III Finkelstein reaction.
So, the correct option is (A): A – II, B – I, C – IV, D – III
