Tandem Michael addition/elimination – novel reactivity of pyridinium ylides in reaction with electron-deficient alkenesстатья
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Дата последнего поиска статьи во внешних источниках: 10 апреля 2024 г.
Аннотация:Novel reactivity of pyridinium ylides in reaction with annulated 4-oxothiazolidin-5-ylidenes as electron-deficient alkenes involving a cascade Michael addition/elimination process is described. The method provides a broad variety of functionalized products available from dipolarophiles with different substituents within the heterocyclic system as well as pyridinium salts with different electron-withdrawing groups (EWG = CO2R, COPh, COMe, CN) in mild conditions with good to excellent yields.