Electrochemical amidochlorination between low-cost styrenes and amides

Area of Science:

• Organic Chemistry
• Electrochemistry
• Synthetic Methodology

Background:

• 2-Chloroalkylamines are crucial structural units in pharmaceuticals and agrochemicals.
• Synthesizing 2-chloroalkylamines via amidochlorination of alkenes is desirable but challenging, especially from readily available amides.
• Existing methods often require expensive or hazardous reagents.

Purpose of the Study:

• To develop an efficient and sustainable electrochemical strategy for the amidochlorination of alkenes using simple amides.
• To establish a method that utilizes inexpensive starting materials and avoids additional chlorinated reagents.
• To provide a novel synthetic route to valuable 2-chloroalkylamine derivatives.

Main Methods:

• Electrochemical amidochlorination of styrenes with amides in 1,2-dichloroethane (DCE).
• Utilizing mild reaction conditions.
• Performing mechanistic studies to elucidate the reaction pathway.

Main Results:

• The electrochemical method successfully achieved amidochlorination between styrenes and amides without external chlorinated reagents.
• The reaction proceeded under mild conditions in DCE, demonstrating broad substrate scope for both styrenes and amides.
• High yields of the desired amidochlorination products were obtained.

Conclusions:

• An efficient electrochemical strategy for amidochlorination has been developed, offering a new synthetic route to 2-chloroalkylamines.
• The method utilizes readily available and low-cost styrenes and amides, with DCE serving as the chlorine source.
• This work presents a valuable advancement in chlorination chemistry and the synthesis of important organic molecules.