30 Seconds to success! – The Wittig reaction, a fundamental and extensively utilized reaction in organic chemistry, enables the efficient conversion of carbonyl compounds to olefins using phosphonium salts. Traditionally, meticulous reaction setup, including the pre-formation of a reactive ylide species via deprotonation of a phosphonium salt, is crucial for achieving high-yielding reactions under classical solution-based conditions. In this report, we present an unprecedented protocol for an ultra-fast mechanochemically driven Wittig reaction under solvent-free and ambient conditions, eliminating the need for tedious ylide pre-formation under strict air and moisture exclusion. A range of aldehydes and ketones were reacted with diverse phosphonium salts under high-speed ball milling conditions, giving access to the respective olefins in only 30 seconds.
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Research facilities:
Zentrum für Kernspinresonanzspektroskopie
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Project title:
Substitution von gasförmigen Reagenzien durch Feststoffe: P 33064-N (FWF - Österr. Wissenschaftsfonds)
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Research Areas:
Sustainable Production and Technologies: 70% Beyond TUW-research foci: 30%