Scientists Prove 67-Year-Old Vitamin B1 Theory Right

For 67 years, scientists wondered if a Columbia University chemist was right about a wild idea involving vitamin B1. Now researchers have proven Ronald Breslow nailed it back in 1958.

Chemists at UC Riverside have done something many thought was impossible. They stabilized an extremely unstable molecule called a carbene in water, bottled it in a tube, and watched it stay intact for months.

This matters because carbenes are carbon molecules with only six electrons instead of the usual eight. That makes them incredibly reactive, breaking down almost instantly when they touch water. Scientists believed vitamin B1 might briefly form this structure inside our cells to power essential chemical reactions, but no one could prove it because the molecules vanished too quickly.

Professor Vincent Lavallo and his team cracked the problem by building what he calls "a suit of armor" around the carbene. This protective shield keeps water and other molecules from attacking the reactive center, letting scientists finally observe and study it using powerful imaging techniques.

"This is the first time anyone has been able to observe a stable carbene in water," Lavallo said. "People thought this was a crazy idea. But it turns out, Breslow was right."

Graduate student Varun Raviprolu, now a postdoctoral researcher at UCLA, made the discovery while exploring carbene chemistry. "We were making these reactive molecules to explore their chemistry, not chasing a historical theory," he said. "But it turns out our work ended up confirming exactly what Breslow proposed all those years ago."

The breakthrough goes far beyond solving a scientific mystery. Carbenes help drive the chemical reactions used to make pharmaceuticals, fuels, and other materials, but most of these processes rely on toxic organic solvents that harm the environment.

Why This Inspires

Water is abundant, safe, and clean. If chemists can use these powerful catalysts in water instead of toxic chemicals, drug manufacturing could become dramatically greener and safer for workers and communities.

The discovery also brings scientists closer to recreating the natural chemistry that happens inside living cells, which are mostly water. "There are other reactive intermediates we've never been able to isolate, just like this one," Lavallo said. "Using protective strategies like ours, we may finally be able to see them, and learn from them."

For Lavallo, who has spent two decades working with carbenes, the achievement feels almost miraculous. "Just 30 years ago, people thought these molecules couldn't even be made," he said. "Now we can bottle them in water."

Raviprolu sees the work as proof that persistence pays off in science. Something that seems impossible today might be possible tomorrow, if we keep trying.