Introduction of Allyl and Prenyl Side-Chains into Aromatic Systems by Suzuki Cross-Coupling Reactions
作者:Darío C. Gerbino、Sandra D. Mandolesi、Hans-Günther Schmalz、Julio C. Podestá
DOI:10.1002/ejoc.200900234
日期:2009.8
for the synthesis of allyl- and prenylaromatic compounds. The first part deals with the preparation of boron reagents like arylboronic acids and their pinacol esters as well as of pinacol allyl- and prenylboronates. The second part of the paper is devoted to the use of these boron reagents in Suzuki–Miyaura cross-coupling reactions leading to allylation and prenylation of aromatic compounds. Of the
Palladium-catalyzed prenylation of (hetero)aryl boronic acids
作者:Jeffrey Leister、Darrian Chao、Kelvin L. Billingsley
DOI:10.1016/j.tetlet.2020.152800
日期:2021.3
cross-coupling of aryl and heteroaryl boronicacids with prenyl alcohol. Catalyst systems based on dialkylbiaryl phosphines were highly active for this transformation. These supporting ligands provided opportunities for tuning the efficiency and regioselectivity of carbon–carbon bond formation. In addition, this method was further extended to the cross-coupling of symmetrical allylic alcohols with aryl boronic
The reactions of arylhalides with 2,3,3-trimethyl-4-penten-2-ol in the presence of a palladium catalyst result in prenyl transfer from the alcohol to arylhalidesvia retro-allylation, yielding prenylarenes. Other multisubstituted allyl groups such as the 2,3-dimethyl-2-butenyl group are introduced to aromatic rings.