Abstract
Selective allylation: Several electron-donating arenes such as 1,3,5-trimethoxybenzene, anisole, and phenol underwent palladium-catalyzed selective allylation in TFA/dimethylacetamide (DMA) under mild conditions with 2,3-allenoates (see scheme). The reaction afforded substituted 4,4-diarylbut-2(E)-enoates in moderate yields with high regio- and stereoselectivity.
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