Grignard Reaction with Formaldehyde
CH3MgBr + HCHO → CH3CH2OH (after hydrolysis)
Visão geral
A Grignard reagent (methylmagnesium bromide) adds to formaldehyde, and after aqueous workup produces a primary alcohol. Grignard reagents are organomagnesium halides that act as powerful nucleophilic carbon sources. The reaction must be performed in anhydrous ether because Grignard reagents react violently with water.
Participantes
| Papel | Substância | Coeficiente | Estado |
|---|---|---|---|
| Reagente | Formaldehyde CH₂O | 1 | (l) |
| Produto | Ethanol C₂H₅OH | 1 | (l) |
Exemplo do cotidiano
Victor Grignard won the 1912 Nobel Prize for this reaction, which revolutionized organic synthesis and is still one of the most taught reactions.
Importância industrial
As reações de Grignard são utilizadas na síntese de álcoois, ácidos carboxílicos e compostos orgânicos complexos. São fundamentais na indústria farmacêutica e agroquímica. Victor Grignard recebeu o Prémio Nobel da Química em 1912.
Propriedades
- Tipo
- Organic
- Reversível
- Não
- Energia
- Exotérmico
- ΔH
- -85,0 kJ/mol
Reações relacionadas
Swern Oxidation
Oxidation of Secondary Alcohol to Ketone
Claisen Condensation (Ethyl Acetate)
Kolbe Electrolysis
Baeyer-Villiger Oxidation
Beckmann Rearrangement (Cyclohexanone Oxime)
Catalytic Hydrogenation of Ethylene
Condensation Polymerization (Nylon 6,6)
Cope Rearrangement
Epoxidation of Alkenes (mCPBA)
Frequently Asked Questions
What is the equation for Grignard Reaction with Formaldehyde?
The balanced equation is: CH₃MgBr + HCHO → CH₃CH₂OH (after hydrolysis).
What type of reaction is Grignard Reaction with Formaldehyde?
Grignard Reaction with Formaldehyde is a organic reaction.
Is Grignard Reaction with Formaldehyde exothermic or endothermic?
Grignard Reaction with Formaldehyde is exothermic (releases energy). The enthalpy change (ΔH) is -85.0 kJ/mol.