What is it about?
How can we make CO₂ conversion truly sustainable—not just in concept, but in chemistry? In our latest work, we demonstrate a metal-free, one-pot route to transform styrene directly into styrene carbonate using molecular oxygen and CO₂. By combining Mukaiyama epoxidation and CO₂ cycloaddition in a single step, we avoid: Transition metal catalysts, Hazardous peroxides, Multi-step processing. Instead, a simple organocatalyst enables an elegant process integration. Key highlights are (i) One-pot transformation with 61% yield and high selectivity; (ii) Molecular oxygen as a benign oxidant; (iii) Clear kinetic separation of steps: radical epoxidation vs. lower-barrier CO₂ fixation; (iv) Strong evidence for the role of phase behavior in controlling reactivity
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Photo by Francisco De Legarreta C. on Unsplash
Why is it important?
This work moves beyond “CO₂ as a feedstock” toward process-relevant chemistry: - Fewer steps → lower energy demand - Metal-free systems → improved sustainability and scalability - Direct coupling of reactions → closer to industrial reality
Perspectives
We are not just converting CO₂—we are learning how to design reactions that integrate oxidation and carbon incorporation seamlessly. That is a key step toward closing carbon cycles in chemical manufacturing.
Prof. Dr. Thomas Ernst Müller
Ruhr-Universitat Bochum
Read the Original
This page is a summary of: Sustainable One-Pot Metal-Free Oxidative Carboxylation of Styrenes with Molecular Oxygen and Carbon Dioxide, ACS Sustainable Chemistry & Engineering, August 2025, American Chemical Society (ACS),
DOI: 10.1021/acssuschemeng.5c03968.
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