Abstract
AbstractA practical process for the stereospecific cross‐coupling of secondary allylic carbonates with arylboronic acids has been developed. The reaction is catalyzed byin situgenerated palladium nanoparticles (PdNPs) without any ligands and additional stabilizers in water under ambient conditions and furnishes the allyl–aryl coupling products in high isolated yields with high stereospecificities as well as excellent chemo‐, regio‐ andE/Z‐selectivities. Thein situgenerated PdNPs showed extraordinary catalytic activity (S/C up to 5000) even for the allyl–aryl coupling reactions of easily eliminated allylic carbonates under aqueous ambient conditions. The mechanism of the process has also been investigated.
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