Williamson Ether Synthesis

C₂H₅ONa + CH₃I → C₂H₅OCH₃ + NaI

Tổng quan

Sodium ethoxide (an alkoxide) reacts with methyl iodide in an SN2 reaction to form ethyl methyl ether. This is the most general and reliable method for synthesizing asymmetric ethers. The alkoxide acts as the nucleophile, and a primary alkyl halide provides the best yields.

Ví dụ thực tế

MTBE (methyl tert-butyl ether), once the most widely used gasoline additive, was produced by a variation of ether synthesis.

Tầm quan trọng công nghiệp

Williamson synthesis is used to produce anisole, crown ethers, polyethylene glycol derivatives, and pharmaceutical ether linkages.

Tính chất

Loại: Organic
Thuận nghịch: Không
Năng lượng: Tỏa nhiệt
ΔH: -90,0 kJ/mol

Phản ứng liên quan

Epoxidation of Alkenes (mCPBA) Swern Oxidation Oxidation of Secondary Alcohol to Ketone E2 Elimination (Dehydrohalogenation) Claisen Condensation (Ethyl Acetate) Aldol Condensation of Acetaldehyde Kolbe Electrolysis Baeyer-Villiger Oxidation Beckmann Rearrangement (Cyclohexanone Oxime) Dehydration of Ethanol

Frequently Asked Questions

What is the equation for Williamson Ether Synthesis?

The balanced equation is: C₂H₅ONa + CH₃I → C₂H₅OCH₃ + NaI.

What type of reaction is Williamson Ether Synthesis?

Williamson Ether Synthesis is a organic reaction.

Is Williamson Ether Synthesis exothermic or endothermic?

Williamson Ether Synthesis is exothermic (releases energy). The enthalpy change (ΔH) is -90.0 kJ/mol.