Syntheses of core-modified corroles by three different [3 + 1] methodologies

Area of Science:

• Organic Chemistry
• Macromolecular Chemistry
• Synthetic Chemistry

Background:

• Corroles are macrocyclic compounds with diverse applications.
• Synthesizing modified corroles, particularly oxa corroles, presents synthetic challenges.
• Achieving specific structural modifications like meso carbon bridges is crucial for tuning properties.

Purpose of the Study:

• To report novel synthetic methodologies for modified oxa corroles.
• To achieve the formation of a meso carbon bridge and direct pyrrole-pyrrole linkage in a single synthetic step.
• To optimize reaction conditions for improved yields and purity.

Main Methods:

• Development of three distinct synthetic routes for oxa corroles.
• Utilizing a single-step condensation and coupling reaction.
• Employing trifluoroacetic acid (TFA) as a catalyst.
• Optimization of reaction parameters including meso substituents, catalyst concentration, and solvent choice.

Main Results:

• Successful synthesis of modified oxa corroles with one meso free carbon in good yields.
• Demonstration of a facile one-step formation of the meso carbon bridge and pyrrole-pyrrole linkage.
• Identification of optimal reaction conditions for efficient corrole synthesis.

Conclusions:

• The reported methods offer efficient and accessible routes to novel modified oxa corroles.
• The one-step synthesis simplifies the preparation of complex corrole structures.
• These findings provide valuable tools for the synthesis of functional corrole derivatives.