Michael Addition

CH₂(COOC₂H₅)₂ + CH₂=CHCOCH₃ → product

Visão geral

A Michael donor (stabilized carbanion) adds to the beta-carbon of a Michael acceptor (alpha,beta-unsaturated carbonyl). This 1,4-conjugate addition forms a new carbon-carbon bond and is complementary to 1,2-addition. The Michael reaction is one of the most versatile C-C bond forming reactions.

Exemplo do cotidiano

The Robinson annulation, combining Michael addition with aldol condensation, is used to build steroid ring systems in drug synthesis.

Importância industrial

As adições de Michael são amplamente utilizadas em síntese farmacêutica, química de polímeros (polimerização de acrilatos) e na síntese de produtos naturais.

Propriedades

Tipo: Organic
Reversível: Sim
Energia: Exotérmico
ΔH: -25,0 kJ/mol
Catalisador: Base (e.g., NaOEt)

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 Michael Addition?

The balanced equation is: CH₂(COOC₂H₅)₂ + CH₂=CHCOCH₃ → product.

What type of reaction is Michael Addition?

Michael Addition is a organic reaction. It is reversible under certain conditions.

Is Michael Addition exothermic or endothermic?

Michael Addition is exothermic (releases energy). The enthalpy change (ΔH) is -25.0 kJ/mol.

What conditions are needed for Michael Addition?

This reaction requires a catalyst (Base (e.g., NaOEt)).