Palladium-Catalyzed Novel Arylations of Cyclic β-Bromo α,β-Unsaturated Aldehydes with Triarylbismuths as Multicoupling Organometallic Nucleophiles
作者:Maddali Rao、Debasis Banerjee、Ritesh Dhanorkar
DOI:10.1055/s-0030-1259290
日期:2011.1
Cross-coupling arylations of cyclic β-promo α,β -unsaturated aldehydes were carried out with triarylbismuths as atom-efficientmulticoupling organometallic reagentsunder palladium-catalyzed conditions. These reactions afforded the corresponding arylated alkenes in an efficient manner with good to high yields.
Ligand-Free Suzuki Cross-Coupling Reactions: Application to β-Halo-α,β-Unsaturated Aldehydes
作者:Pranjal Gogoi、Pranjal Bezboruah、Romesh C. Boruah
DOI:10.1002/ejoc.201300491
日期:2013.8
ligand-free Suzuki–Miyaurareaction of β-halo α,β-unsaturated aldehydes with boronic acids in aqueous media at room temperature is described. Under the optimized conditions, both steroidal and nonsteroidal β-halo α,β-unsaturated aldehydes reacted rapidly with the boronic acids to provide a series of aryl-substituted derivatives in excellent yields. Moreover, the protocol was extended to the direct one-pot