Match the LIST-I with LIST-II List-I Name of reaction A. Finkelstein reaction B. Swarts reaction C. Sandmeyer's reaction D. Fittig reaction List-II Reagent or catalyst used I. SbF3 II. Na, dry ether III. NaI IV. Cu2Cl2 Choose the correct answer from the options given below:

The correct answer is Option 2. Full mathematical solution steps and hints are accessible in the interactive StemCET workspace.

Chemistry Q65 – JEE-MAIN 2026

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Home Chemistry Basic Organic ChemistryQuestion #104

Match the LIST-I with LIST-II

\begin{array}{lcl} List-I & List-II \\ Name of reaction & Reagent or catalyst used \\ A. Finkelstein reaction & I. {SbF}_{3} \\ B. Swarts reaction & II. Na, dry ether \\ C. Sandmeyer's reaction & III. NaI \\ D. Fittig reaction & IV. {Cu}_{2} {Cl}_{2} \end{array}

Choose the correct answer from the options given below:

Clue 1 of 3: Recall Name Reactions

This question tests your knowledge of common name reactions in organic chemistry, specifically those involving halogen derivatives.

🧠 Full Solution Path

Step 1: Identify Reagents for Halogen Exchange Reactions✦ Active

The Finkelstein reaction is used to synthesize alkyl iodides from alkyl chlorides or bromides using sodium iodide ( $N a I$ ) in acetone. Thus, A matches with III.

The Swarts reaction is used to synthesize alkyl fluorides from alkyl chlorides or bromides using metallic fluorides like $A g F$ , $H g_{2} F_{2}$ , $C o F_{2}$ , or $S b F_{3}$ . Thus, B matches with I.

Step 2: Identify Reagents for Sandmeyer's and Fittig Reactions○ Expand

Sandmeyer's reaction converts aryl diazonium salts to aryl halides (chlorides or bromides) using cuprous halides ( $C u_{2} X_{2}$ or $C u X / H X$ ). For aryl chlorides, $C u_{2} C l_{2}$ is used. Thus, C matches with IV.

The Fittig reaction is a coupling reaction of two aryl halides in the presence of sodium ( $N a$ ) and dry ether to form a biaryl. Thus, D matches with II.

Step 3: Match the Reactions and Select the Correct Option○ Expand

Based on the matches:

A. Finkelstein reaction $\to$ III. $N a I$

B. Swarts reaction $\to$ I. $S b F_{3}$

C. Sandmeyer's reaction $\to$ IV. $C u_{2} C l_{2}$

D. Fittig reaction $\to$ II. Na, dry ether

This combination corresponds to option 2.

💡 Teacher's Secret Hint

Ensure you distinguish between similar reactions like Finkelstein and Swarts, and Wurtz and Fittig reactions based on their specific reagents and substrates.

✦ STEM Console utilizes AI models to generate step-by-step explanations and math clues. AI can make mistakes.

Chemistry Question 65 – JEE-MAIN 2026

Clue 1 of 3: Recall Name Reactions

🧠 Full Solution Path