Researchers have made a groundbreaking discovery that confirms a theory about vitamin B1, or thiamine, that dates back 67 years. They’ve managed to stabilize a highly reactive molecule called a carbene in water—something many believed was impossible.

Carbenes are carbon atoms with only six electrons, making them unstable and very reactive. In water, they typically break down almost instantly. However, scientists long suspected that vitamin B1 might form a carbene structure in our bodies, facilitating essential biochemical reactions.
For the first time, researchers generated and isolated a stable carbene in water. They enclosed it in a protective molecule, which allowed it to remain intact for several months. Their findings were published in the journal Science Advances, and expert Vincent Lavallo from UC Riverside remarked, “This is the first time anyone has been able to observe a stable carbene in water. People thought this was a crazy idea. But it turns out, Breslow was right,” referring to chemist Ronald Breslow’s 1958 hypothesis.
This discovery does more than confirm history. It has practical applications, especially in the field of chemistry. Carbenes play a crucial role as ligands in metal-based catalysts used to create pharmaceuticals and fuels. Traditional methods often rely on toxic solvents, while this new approach could allow reactions to happen in water, making them cleaner and safer.
Water is abundant, non-toxic, and environmentally friendly. The potential for using water as a solvent opens up exciting possibilities for sustainable chemistry practices. As researcher Varun Raviprolu noted, “If we can get these powerful catalysts to work in water, that’s a big step toward greener chemistry.”
This discovery shines a light on the potential to generate other reactive molecules that are crucial for biochemical processes but have yet to be isolated. Both Lavallo and Raviprolu stress the importance of persistence in scientific exploration. They remind us that what seems impossible today may become reality with continued investment in research.
By bridging the gap between historical theories and modern science, this breakthrough not only enriches our understanding of chemistry but also paves the way for future innovations in the field.
For more on the study, check out the full article in Science Advances here.
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