Recent advances in Sonogashira reactions.

Area of Science:

• Organic Chemistry
• Catalysis
• Materials Science

Background:

• The Sonogashira cross-coupling reaction is a cornerstone of organic synthesis for creating sp2-sp carbon-carbon bonds.
• It involves coupling aryl or vinyl halides with terminal acetylenes, catalyzed by palladium and other transition metals.
• This reaction is crucial for synthesizing diverse molecules, including natural products, pharmaceuticals, and advanced materials like conjugated polymers.

Purpose of the Study:

• To critically review recent advancements in the Sonogashira cross-coupling reaction.
• To highlight innovations in catalysts, reaction conditions, and substrate scope.
• To provide a comprehensive overview of the reaction's evolving capabilities.

Main Methods:

• Literature review focusing on recent developments (352 references).
• Analysis of new catalytic systems for Sonogashira coupling.
• Examination of modified reaction conditions and substrate scope expansions.

Main Results:

• Significant progress has been made in developing more efficient and selective catalysts for the Sonogashira reaction.
• Novel reaction conditions have been established to broaden substrate applicability and improve yields.
• Recent studies showcase expanded substrate scope, enabling the synthesis of increasingly complex molecular architectures.

Conclusions:

• The Sonogashira cross-coupling reaction continues to evolve, driven by innovations in catalysis and methodology.
• These advancements solidify its importance in synthesizing a wide array of valuable organic compounds and materials.
• The review underscores the reaction's sustained relevance and future potential in synthetic chemistry.