Defunctionalization Enabled by Intramolecular Radical Aromatic Ipso Substitution.

Area of Science:

• Organic Chemistry
• Synthetic Chemistry

Background:

• N-polyheterocycles are important scaffolds in medicinal chemistry.
• Efficient synthetic routes to N-polyheterocycles are crucial for drug discovery.

Purpose of the Study:

• To develop a novel chemoselective and regioselective method for synthesizing N-polyheterocycles.
• To investigate the mechanism of the developed synthetic procedure.

Main Methods:

• Copper-promoted defunctionalization reaction.
• Synthesis of various N-polyheterocycles.
• Mechanistic studies involving radical processes.

Main Results:

• A rapid and efficient procedure for constructing N-polyheterocycles was established.
• The reaction proceeds with high chemoselectivity and regioselectivity.
• Initial mechanistic investigations suggest a single-electron transfer radical pathway.

Conclusions:

• The developed copper-promoted defunctionalization offers a powerful tool for N-polyheterocycle synthesis.
• The findings provide insights into the reaction mechanism, potentially involving radical intermediates.