Towards aryl C-N bond formation in dynamic thin films

Area of Science:

• Organic Chemistry
• Chemical Engineering
• Materials Science

Background:

• Carbon-nitrogen (C-N) bond forming reactions are fundamental in synthesizing diverse organic molecules.
• Traditional C-N coupling methods often rely on transition metal catalysts, which can be costly and environmentally burdensome.
• Developing metal-free synthetic routes is a key objective in sustainable chemistry.

Purpose of the Study:

• To explore the efficacy of a microfluidic vortex fluidic device (VFD) for metal-free C-N bond formation.
• To synthesize N-aryl compounds from readily available starting materials.
• To investigate the advantages of confined microfluidic conditions for organic reactions.

Main Methods:

• Utilized a thin film microfluidic vortex fluidic device (VFD) operating in a confined mode.
• Employed 2-chloropyrazine and various amines as substrates.
• Conducted the reaction without the addition of any transition metal catalysts.

Main Results:

• Successfully synthesized N-aryl compounds through C-N bond formation.
• Demonstrated the capability of the VFD to facilitate this transformation efficiently.
• Achieved the desired products without metal contamination, simplifying purification.

Conclusions:

• The microfluidic vortex fluidic device (VFD) provides an effective platform for metal-free N-arylation.
• This method offers a sustainable and potentially scalable alternative to traditional catalytic approaches.
• Confined microfluidic conditions can promote challenging organic transformations.