Rhodium(II)-incorporated metal-organic framework catalyst combined with flow chemistry for efficient carbene-mediated...

Area of Science:

• Organic Chemistry
• Catalysis
• Materials Science

Background:

• Carbene-mediated reactions are crucial for organic synthesis.
• Developing efficient and recyclable catalysts is essential for sustainable chemistry.
• Heterogeneous catalysts offer advantages in separation and reusability.

Purpose of the Study:

• To develop a novel heterogeneous catalyst for carbene-mediated three-component reactions.
• To investigate the catalyst's performance in terms of selectivity, activity, and stability.
• To demonstrate the feasibility of continuous-flow synthesis using this catalytic system.

Main Methods:

• Integration of a recyclable Rh-MOF (Metal-Organic Framework) heterogeneous catalyst.
• Application in three-component reactions involving diazo compounds, alcohols, and electrophiles.
• Utilizing a continuous-flow reactor setup for gram-scale synthesis.

Main Results:

• The Rh-MOF catalyst demonstrated broad functional group tolerance.
• Excellent diastereoselectivity was achieved in the reactions.
• A high turnover number (TON) of 856 was recorded.
• Prolonged operational stability was observed in continuous-flow operation.
• Gram-scale synthesis was successfully performed.

Conclusions:

• The recyclable Rh-MOF catalyst is highly effective for carbene-mediated three-component reactions.
• The system supports sustainable and scalable synthesis through continuous-flow operation.
• This approach offers a robust and efficient method for synthesizing complex organic molecules.