Palladium-catalyzed arylation of vinylic acetates. Phosphine ligand influenced regioselectivity
作者:Mickaël Jean、Jacques Renault、Pierre van de Weghe
DOI:10.1016/j.tetlet.2009.09.048
日期:2009.11
A palladium-catalyzed coupling reaction of aryl bromides with vinylic acetates in the presence of tributyltin methoxide has been described. The α-arylation aldehyde product and the aryl ketone were obtained in the presence of P(t-Bu)3 and P(o-Tol)3, respectively.
oxindole skeleton by anion-based methods provided additional substituted derivatives for structure-activity relationship studies. Their effects on neuronal celldeath induced by oxidative stress were evaluated by lactate dehydrogenase assay. Compounds with the alkyl chain length of 2–4 significantly suppressed the neuronal celldeath. No significant change occurred in the activity by substitution with