Stereoregular poly(2-phenylthiirane) via cationic ring-opening polymerization

Area of Science:

• Polymer Chemistry
• Organic Synthesis

Background:

• Polythioethers are versatile polymers with diverse applications.
• Controlled synthesis of polythioethers with specific structures remains a challenge.

Purpose of the Study:

• To develop an effective strategy for synthesizing well-defined polythioethers.
• To precisely control the regio- and stereochemistry during polymerization.

Main Methods:

• Cationic polymerization of thiiranes with electron-withdrawing substituents.
• Ring-opening polymerization of 2-phenylthiirane.

Main Results:

• Achieved effective synthesis of polythioethers with a well-defined structure.
• Demonstrated precise control over regio- and stereochemistry.
• Produced poly(2-phenylthiirane) with high stereoregularity using enantiomerically pure thiirane.

Conclusions:

• The described cationic polymerization strategy is effective for controlled polythioether synthesis.
• This method enables the production of stereoregular poly(2-phenylthiirane).