Safer diazo compound synthesis advances medicinal chemistry capabilities
Researchers at Tokyo University of Science have developed a safer method for synthesizing diazo compounds, a crucial component in modern drug discovery, using a novel azide-to-diazo conversion pathway. This new approach eliminates hazardous reagents and enables flexible access to functionalized intermediates relevant to drug candidate synthesis.
A research team from Tokyo University of Science has developed a safer and more practical approach to generating diazo compounds, central to modern drug discovery. The method synthesizes β-heteroatom-substituted 2-diazopropionic acid esters without relying on hazardous precursors like diazomethane. Instead, it uses a Michael addition reaction mediated by an azide-to-diazo conversion, allowing access to diazo compounds from readily available starting materials under mild conditions. The innovation adapts a classic reaction to convert azide groups into diazo groups through a reactive phosphazide intermediate. The approach enables the introduction of heteroatoms, producing highly functionalized molecules that can be further transformed into important chemical motifs. The reaction proceeds under mild conditions, improving safety and simplicity, and shows promise for broader application in pharmaceutical synthesis.
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