Buchwald-Hartwig Amination

ArBr + R₂NH → ArNR₂ + HBr

Overview

The Buchwald-Hartwig reaction couples aryl halides with amines using a palladium catalyst to form aryl C-N bonds. This transformation, developed independently by Stephen Buchwald and John Hartwig in the 1990s, solved a long-standing challenge in organic chemistry. The reaction tolerates diverse functional groups.

Everyday Example

Many modern pharmaceuticals contain aryl amine bonds that were formed using this palladium-catalyzed coupling reaction.

Industrial Importance

Buchwald-Hartwig amination is widely used in pharmaceutical process chemistry and materials science for organic semiconductors and OLED materials.

Properties

Type: Organic
Reversible: No
Energy: Exothermic
ΔH: -25.0 kJ/mol
Catalyst: Pd/BINAP

Related Reactions

Aldol Condensation of Acetaldehyde Amide Formation (Acetic Acid + Ammonia) Baeyer-Villiger Oxidation Beckmann Rearrangement (Cyclohexanone Oxime) Bromination of Ethylene Cannizzaro Reaction of Formaldehyde Catalytic Hydrogenation of Ethylene Claisen Condensation (Ethyl Acetate) Condensation Polymerization (Nylon 6,6) Cope Rearrangement

Frequently Asked Questions

What is the equation for Buchwald-Hartwig Amination?

The balanced equation is: ArBr + R₂NH → ArNR₂ + HBr.

What type of reaction is Buchwald-Hartwig Amination?

Buchwald-Hartwig Amination is a organic reaction.

Is Buchwald-Hartwig Amination exothermic or endothermic?

Buchwald-Hartwig Amination is exothermic (releases energy). The enthalpy change (ΔH) is -25.0 kJ/mol.

What conditions are needed for Buchwald-Hartwig Amination?

This reaction requires a catalyst (Pd/BINAP).