Water as an Electron Donor for Cross-Electrophile Coupling Reactions

Area of Science:

• Organic Chemistry
• Electrochemistry
• Sustainable Synthesis

Background:

• Cross-electrophile coupling (XEC) is crucial for C-C bond formation.
• Traditional XEC methods rely on stoichiometric reductants, generating substantial waste.
• This leads to environmental pollution and increased costs.

Purpose of the Study:

• To develop a sustainable electrochemical platform for XEC reactions.
• To eliminate the need for metallic or organic stoichiometric reductants.
• To enable efficient C-C bond formation using electrochemistry.

Main Methods:

• Utilizing a divided electrochemical cell.
• Oxidizing water at the anode to generate electrons.
• Producing a low-valent nickel catalyst at the cathode for coupling.

Main Results:

• Demonstrated a novel electrochemical cross-coupling platform.
• Successfully performed XEC reactions without stoichiometric reductants.
• Showcased the versatility with various primary, secondary, and heteroaryl halides.

Conclusions:

• The developed electrochemical method offers a greener alternative for XEC.
• This approach significantly reduces waste compared to traditional methods.
• The platform is effective for synthesizing diverse organic molecules.