Visible Light-Driven Contra-Thermodynamic Functional Group Transposition of Chalcones

Area of Science:

• Organic Chemistry
• Synthetic Chemistry

Background:

• α,β-unsaturated ketones, including chalcones, have diverse applications in medicine and materials science.
• Functional group transposition is a growing area in organic synthesis, but its application to chalcones was previously unachieved.

Purpose of the Study:

• To develop a novel method for the skeletal reorganization of 1,3-diaryl enones (chalcones).
• To access the 1,2-diaryl enone chemical space from chalcones using visible light.

Main Methods:

• Visible light-driven reaction conditions were employed.
• The method was tested for compatibility with various functional group patterns.

Main Results:

• Direct access to transposed 1,2-diaryl enone structures from chalcones was achieved.
• The reaction consistently yielded products in excellent yields.
• Mechanistic studies provided insights into the reaction's selectivity.

Conclusions:

• A new synthetic route and retrosynthetic disconnection for chalcones were established.
• This work enables the use of natural chalcones in skeletal reorganization, accelerating the discovery of new therapeutics and functional materials.