59415-76-8Relevant articles and documents
Stereo- and Regioselective Palladium-Catalyzed 1,4-Dialkoxylation of Conjugated Dienes
Baeckvall, Jan-E.,Vaegberg, Jan O.
, p. 5695 - 5699 (2007/10/02)
A mild method for stereo- and regioselective 1,4-dialkoxylation of conjugated dienes was developed.The reaction is catalysed by palladium(II), and p-benzoquinone is used as the oxidant.It was found that the reaction rate depended on the presence of catalytic amounts of a strong acid.The role of the acid is probably 2-fold: (i) to create a cationic (?-allyl)palladium intermediate and (ii) to protonate the oxygen in the coordinated benzoquinone in the (?-allyl)palladium(benzoquinone) intermediate.