UCLA Chemists Redefines 100-Year-Old Chemistry Rule: Here’s Everything You Need to Know

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UCLA Chemists Redefines 100-Year-Old Chemistry Rule: Here’s Everything You Need to Know

A recent discovery by UCLA scientists has challenged a century-old principle in organic chemistry, reshaping fundamental knowledge and broadening possibilities for pharmaceutical research. Researchers who were led by Professor Neil Garg, have found a way to synthesise and stabilise anti-Bredt olefins (ABOs), molecular structures. These structures were long considered too unstable to exist. This accomplishment dismantles Bredt’s rule—a restriction from 1924 that has influenced molecular design for decades—allowing chemists to explore new chemical reactions in ***** development.

Bredt’s Rule and Its Historical Significance

Established by chemist Julius Bredt nearly a hundred years ago, Bredt’s rule asserts that double bonds cannot exist at the bridgehead position in certain molecules, as this structure would disrupt molecular stability. Bredt’s rule has held strong for decades, barring chemists from designing certain types of synthetic compounds. Given that double bonds or olefins, are widely used in pharmaceuticals, this limitation has affected the landscape of ***** design by restricting the diversity of possible molecular structures.

How UCLA Researchers Achieved the Impossible

In a paper

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in Science, Garg and his team reveal a method to create ABOs by treating molecules known as silyl (pseudo)halides with a fluoride source, which sparks an elimination reaction, leading to **** formation. To handle the instability of ABOs, the team introduced a trapping agent to stabilise the molecules, allowing them to isolate practical reaction products. This approach provides chemists with a controlled way to work with ABOs, opening up pathways to design unique compounds with real-world applications.

Implications for the Future of ***** Discovery

According to Garg, the pharmaceutical industry has a strong interest in generating 3D structures like those which are now achievable with ABOs. It could be critical for discovering novel drugs. “For over a century, chemists have avoided anti-Bredt olefins, believing them impossible to work with,” Garg said, highlighting the potential of these newly accessible compounds for ***** innovation. Co-author and computational chemistry expert Professor Ken Houk’s collaboration also helped elucidate the potential of these compounds in practical applications.

This finding invites chemists to rethink molecular rules as flexible guidelines rather than fixed laws, could catalyse a wave of innovation in synthetic chemistry and pharmaceutical development.

 

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