Oxetanes in heterocycle synthesis: recent advances

Area of Science:

• Organic Chemistry
• Synthetic Chemistry
• Heterocyclic Chemistry

Background:

• Oxetanes are strained four-membered cyclic ethers.
• Their inherent ring strain and regioselective reactions make them valuable synthetic intermediates.
• Heterocycles are crucial structural motifs in pharmaceuticals and materials science.

Purpose of the Study:

• To review recent advancements in heterocycle synthesis utilizing oxetanes from 2019 to 2025.
• To categorize and discuss various oxetane-based synthetic strategies.
• To provide insights for future research in this field.

Main Methods:

• Literature review of synthetic methodologies involving oxetanes.
• Categorization of reactions including nucleophilic attack-induced ring-opening, semipinacol rearrangements, and 1,6-dipole precursors.
• Analysis of reaction mechanisms, chiral control, and substrate scope.

Main Results:

• Summarized key advances in constructing diverse heterocycles from oxetanes.
• Highlighted the utility of oxetanes in intramolecular nucleophilic ring-opening and tandem reactions.
• Discussed novel synthetic strategies and the application of chiral oxetanes.

Conclusions:

• Oxetanes are highly versatile and efficient building blocks for heterocycle synthesis.
• Recent synthetic strategies have expanded the scope and efficiency of oxetane-based transformations.
• Further exploration of oxetane chemistry promises novel heterocycle scaffolds.