Multicomponent Reactions for the Synthesis of Oxazepines.

Area of Science:

• Medicinal Chemistry
• Organic Synthesis
• Green Chemistry

Background:

• Oxazepines are privileged heterocyclic scaffolds in medicinal chemistry, forming the core of essential drugs.
• They exhibit diverse biological activities, including antifungal, anti-inflammatory, antibacterial, antitumor, anti-HIV, and antidepressant properties.
• Traditional synthetic methods for oxazepines are often multistep and generate significant waste.

Purpose of the Study:

• To review the synthesis of oxazepine derivatives using multicomponent reactions (MCRs).
• To highlight MCRs as sustainable, efficient, and green alternatives to traditional synthetic routes.
• To provide a comprehensive overview of MCR-based oxazepine synthesis up to 2025 for chemists.

Main Methods:

• Focus on multicomponent reactions (MCRs), specifically Ugi and Betti reactions.
• Exploration of MCRs for straightforward and green synthesis of complex oxazepine synthons.
• Review of literature from inception to 2025 on MCRs for oxazepine synthesis.

Main Results:

• MCRs enable the synthesis of diverse oxazepine derivatives in high yields.
• These reactions offer a single-pot, single-step approach to complex molecules.
• MCRs provide a sustainable and environmentally benign alternative for oxazepine synthesis.

Conclusions:

• MCRs are powerful tools for the efficient and green synthesis of oxazepines.
• Adoption of MCRs can lead to safer, more economical, and environmentally friendly synthetic methodologies.
• This review serves as a valuable resource for designing novel oxazepine derivatives via sustainable routes.