Question:
2-Bromopropane reacts with Mg in dry ether to give a product which on treatment with HCHO forms an addition product. The addition product on hydrolysis forms
2-Bromopropane reacts with Mg in dry ether to give a product which on treatment with HCHO forms an addition product. The addition product on hydrolysis forms
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Grignard + $HCHO$ $\rightarrow$ Primary Alcohol.
Updated On: Apr 27, 2026
- 1-butanol
- 2-butanol
- 2-propanol
- 2-methyl-1-propanol
- 2-methyl-2-propanol
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The Correct Option is D
Solution and Explanation
Step 1: Concept
Reaction of Grignard reagent with formaldehyde ($HCHO$) yields a primary alcohol.
Step 2: Meaning
Isopropyl magnesium bromide + $HCHO$ $\rightarrow$ Isobutyl alcohol derivative.
Step 3: Analysis
The Grignard reagent is $(CH_3)_2CHMgBr$. Reacting with $HCHO$ adds one carbon to the chain, resulting in 2-methyl-1-propanol.
Step 4: Conclusion
Hence, the correct answer is 2-methyl-1-propanol.
Final Answer: (D)
Reaction of Grignard reagent with formaldehyde ($HCHO$) yields a primary alcohol.
Step 2: Meaning
Isopropyl magnesium bromide + $HCHO$ $\rightarrow$ Isobutyl alcohol derivative.
Step 3: Analysis
The Grignard reagent is $(CH_3)_2CHMgBr$. Reacting with $HCHO$ adds one carbon to the chain, resulting in 2-methyl-1-propanol.
Step 4: Conclusion
Hence, the correct answer is 2-methyl-1-propanol.
Final Answer: (D)
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