Recent progress in the radical α-C(sp³)-H functionalization of ketones

Area of Science:

• Organic Chemistry
• Synthetic Chemistry
• Radical Chemistry

Background:

• Ketones are versatile building blocks in organic synthesis.
• α-C(sp³)-H functionalization offers direct routes to complex molecular architectures.
• Developing sustainable methods for ketone functionalization is crucial.

Purpose of the Study:

• To review recent advancements in radical α-C(sp³)-H functionalization of ketones.
• To highlight methods utilizing ketones as α-ketone radical sources.
• To showcase the synthesis of complex scaffolds and biologically active molecules.

Main Methods:

• Radical initiation systems for generating α-ketone radicals.
• Reactions involving alkenes, alkynes, enynes, imides, and imidazo[1,2-a]pyridines.
• Detailed mechanistic investigations of the transformations.

Main Results:

• Demonstrated the direct use of simple ketones as α-ketone radical precursors.
• Expanded the scope of ketone functionalization to various unsaturated and heterocyclic substrates.
• Successfully synthesized complex chemical scaffolds and drug molecules.

Conclusions:

• Radical α-C(sp³)-H functionalization of ketones is a powerful and sustainable synthetic strategy.
• This approach significantly enhances the structural diversity and complexity of ketone derivatives.
• The methodology is applicable to the synthesis of valuable biologically active compounds.