Abstract
The Pd(PPh3)4-catalyzed reaction between a-cyano or b-oxo carboxylates and allyl acetate in supercritical carbon dioxide with the K2CO3–18-crown-6 system as a base affords exhaustive allylation products in high yields, whereas malononitrile and acetylacetone of higher CH acidity form the mixtures of mono- and diallylated derivatives in moderate yields.
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