What is the IUPAC name of the organic compound formed in the following chemical reaction ?Acetone [(ii) H_2O, H^+](i) C_2H_5MgBr,\ dry Ether Product

1. 2-methyl propan-2-ol

2. pentan-2-ol

3. pentan-3-ol

4. 2-methyl butan-2-ol

Doubtly Asked 30 Oct 2026 NEET UG 2021 Practice test neet Save WhatsApp Report

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Answer: 4. 2-methyl butan-2-ol

Key idea: a Grignard reagent adds to a ketone to give a tertiary alcohol.

\(\mathrm{(CH_3)_2C=O+C_2H_5MgBr\rightarrow(CH_3)_2C(C_2H_5)OMgBr\xrightarrow{H_2O}(CH_3)_2C(OH)C_2H_5}\).

Longest chain with OH: 4 carbons (butane); OH and methyl both on C-2. Name: 2-methylbutan-2-ol.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report

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