Searching for new reactivity (Nobel lecture)

Area of Science:

• Organic Chemistry
• Catalysis

Background:

• Selective oxidation of olefins is a cornerstone of modern organic synthesis.
• Asymmetric epoxidation (AE) and asymmetric dihydroxylation (AD) reactions, developed by Sharpless and co-workers, are key methods.

Discussion:

• Ligand-accelerated catalysis is central to the efficiency and selectivity of AE and AD reactions.
• These catalytic systems demonstrate significant turnover (amplification), enhancing their practical impact.
• The developed catalysts exhibit high enantioselectivity and broad substrate tolerance, overcoming limitations of enzyme-based systems.

Key Insights:

• AE and AD reactions provide versatile and reliable routes for stereoselective olefin functionalization.
• Small, highly enantioselective catalysts offer advantages over traditional methods.
• Ligand acceleration and catalyst turnover are critical for advancing catalytic processes.

Outlook:

• Further exploration of ligand-accelerated catalysis may uncover novel catalytic transformations.
• The principles demonstrated in AE and AD can inspire the design of new catalysts for diverse synthetic challenges.
• Continued research into enantioselective catalysis promises to expand the toolkit for complex molecule synthesis.