alleryReaction of Grignard with formaldehyde HCHO gives:
AKetone
BPrimary alcohol R-CH₂-OH (after H₂O workup)
CNo product
DMethanol
Answer & Solution
Correct answer: B. Primary alcohol R-CH₂-OH (after H₂O workup)
RMgX + HCHO → R-CH₂-OMgX → R-CH₂-OH (after H+ workup). 1° alcohol.
Aldehydes (RCHO) → 2° alcohol; ketones → 3° alcohol.
Powerful C-C bond formation.
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