Tetrahydropyridines: a recent update for their multicomponent synthesis

Area of Science:

• Organic Chemistry
• Medicinal Chemistry
• Green Chemistry

Background:

• Tetrahydropyridines (THPs) are crucial nitrogen-containing heterocyclic compounds with significant biological activity.
• Their structural versatility makes them key components in drug discovery and synthetic chemistry.
• Traditional synthesis methods can be complex and less efficient.

Purpose of the Study:

• To review recent advancements in tetrahydropyridine synthesis using multicomponent reactions (MCRs).
• To explore the use of various nitrogen sources in MCRs for THP derivative preparation.
• To emphasize green and sustainable synthetic methodologies.

Main Methods:

• Focus on multicomponent reactions (MCRs) for tetrahydropyridine synthesis.
• Utilizes diverse nitrogen sources including amines, enamines, imines, ammonia, and ammonium acetate.
• Highlights sustainable approaches such as solvent-free, microwave-assisted, photoinduced, and catalyst-free reactions.

Main Results:

• MCRs provide a rapid, efficient, and single-step approach to synthesize a wide array of THP derivatives.
• Green chemistry principles are effectively integrated into THP synthesis via MCRs.
• Diverse nitrogen sources enable the construction of varied THP scaffolds.

Conclusions:

• Multicomponent reactions represent an economical and environmentally friendly strategy for synthesizing tetrahydropyridines.
• These MCR-based methods facilitate the creation of novel THP structures for chemical and pharmaceutical research.
• The review underscores the value of MCRs in advancing sustainable synthetic chemistry for biologically relevant molecules.