Construction of Medium-Sized Rings by Gold Catalysis

Area of Science:

• Organic Chemistry
• Catalysis
• Medicinal Chemistry

Background:

• Cyclic compounds are vital in natural products and therapeutics.
• Medium-sized rings (MSRs) are challenging to synthesize.
• Metal-mediated cyclizations offer synthetic routes to MSRs.

Purpose of the Study:

• To review gold-catalyzed methodologies for MSR construction.
• To focus on the synthesis of 7- to 11-membered rings.
• To examine reaction pathways, precursor selection, and catalyst choice.

Main Methods:

• Review of literature on gold-catalyzed cyclizations.
• Analysis of substrate classes and acyclic precursors.
• Discussion of reaction mechanisms and selectivity.

Main Results:

• Gold catalysis enables efficient construction of MSRs.
• Specific focus on 7-membered and 8-11-membered ring formation.
• Key factors influencing pathway, mode, and selectivity identified.

Conclusions:

• Gold catalysis is a powerful tool for MSR synthesis.
• Understanding mechanistic attributes guides catalyst and precursor selection.
• This review provides insights into Au-mediated MSR construction.