Question

Grignard reagent reacts with formaldehyde to produce:

• A. an acid
• B. primary alcohol
• C. an anhydride
• D. secondary alcohol

Answer 1

Answer: (B)

$\therefore HCHO+RMgX⟶-1^{\circ }$ alcohol
any other aldehyde $+RMgX\to 2^{\circ }$ alcohol
Ketone $+RMgX\to 3^{\circ }$ alcohol