Which of the following gives primary alcohol with Grignard reagent?
Correct answer: B. Epoxide
- A. Acetaldehyde
- B. Epoxide
- C. Acetone
- D. Carbon dioxide
Explanation
Option A : Acetaldehyde with Grignard reagents produces secondary alcohol. Option: B Epoxide opens as the electrophile is generated by the addition of the alkyl group by Grignard reagent on epoxide. When subjected to acidic conditions, this leads to forming a primary alcohol. Hence, the reaction of epoxides with Grignard reagent generates primary alcohols. Option C : Acetone with Grignard reagents produces tertiary ALCHOLS. Option D : Carbon dioxide reacts with Grignard reagents to produce alkanoic acids.
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About Alkyl Halides
Alkyl halides are named and related to their carbon-halogen structure, polarity and reactivity. The key reactions are nucleophilic substitution by SN1 and SN2 mechanisms and elimination by E1 and E2 mechanisms, including how substrate structure, nucleophile, base, solvent and temperature influence substitution versus elimination.
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