How do Grignard reagents react with formaldehyde to form primary alcohols?

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organohalogen compound Vinyl chloride is an organohalogen compound that has important industrial applications. When treated with certain catalysts, vinyl chloride monomers undergo polymerization and form the larger compound known as polyvinyl chloride, or PVC. PVC is used in the manufacture of numerous products, including packaging films and water pipes.

Grignard reagents, which are organometallic compounds typically formulated as RMgX, react with formaldehyde through an addition reaction to the carbonyl group (C=O) to produce magnesium alkoxides.12

When these intermediate magnesium alkoxides are subsequently hydrolyzed, they yield primary alcohols. This process results in a primary alcohol that contains one additional carbon atom compared to the original alkyl halide used to synthesize the Grignard reagent. This reaction is a fundamental tool in organic chemistry for extending carbon chains.21