Michael Addition

CH₂(COOC₂H₅)₂ + CH₂=CHCOCH₃ → product

Tổng quan

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.

Ví dụ thực tế

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

Tầm quan trọng công nghiệp

Michael additions are used extensively in pharmaceutical synthesis, polymer chemistry (acrylate polymerization), and in the synthesis of natural products.

Tính chất

Loại: Organic
Thuận nghịch: Có
Năng lượng: Tỏa nhiệt
ΔH: -25,0 kJ/mol
Chất xúc tác: Base (e.g., NaOEt)

Phản ứng liên quan

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)).