Structurally diverse polyamides obtained from monomers derived via the ugi multicomponent reaction

Area of Science:

• Polymer Chemistry
• Organic Synthesis
• Materials Science

Background:

• The Ugi four-component reaction (Ugi-4CR) is a versatile tool for synthesizing complex molecules.
• Renewable resources like castor oil offer sustainable building blocks for polymer synthesis.
• Developing novel polymers with tailored functionalities is crucial for advanced materials.

Purpose of the Study:

• To synthesize a new class of substituted polyamides via Ugi-4CR combined with polymerization techniques.
• To utilize renewable resources, specifically castor oil derivatives, as monomers.
• To explore the photoresponsive properties of the synthesized polyamides.

Main Methods:

• The Ugi four-component reaction (Ugi-4CR) was employed to create diverse monomers from renewable 10-undecenoic acid.
• Monomers were polymerized using acyclic diene metathesis (ADMET) and thiol-ene chemistry.
• Synthesized polymers were characterized, and photoresponsive behavior was investigated.

Main Results:

• A new class of poly-1-(alkylcarbamoyl) carboxamides was successfully synthesized.
• Polymers incorporated amide moieties in both the backbone and side chains, offering structural diversity.
• Ortho-nitrobenzylamide-containing polyamides demonstrated photoresponsive properties upon light irradiation.

Conclusions:

• The combination of Ugi-4CR with ADMET or thiol-ene polymerization provides a powerful route to novel, functional polyamides.
• Renewable building blocks enable sustainable synthesis of advanced polymeric materials.
• The photoresponsive nature of these polyamides holds promise for applications in light-triggered materials science.