https://www.selleckchem.com/pr....oducts/as1517499.htm
While β,γ-unsaturated carbonyl compounds have been widely used as γC- or αC-nucleophiles, their potential αC,αC-bisnucleophilic reactivity is still underdeveloped. Herein, a phosphine-catalysed (4+1) annulation of β'-acetoxy allenoate and a β,γ-unsaturated carbonyl compound is reported, wherein β'-acetoxy allenoate is the 1,4-biselectrophilic component while the β,γ-unsaturated carbonyl compound serves as an αC,αC-bisnucleophile. The process not only provides a new reaction mode of β,γ-unsaturated carbonyl compounds under mild conditi
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