Palladium-catalyzed direct β-arylation of ketones with diaryliodonium salts: a stoichiometric heavy metal-free and user-friendly approach
作者:Zhongxing Huang、Quynh P. Sam、Guangbin Dong
DOI:10.1039/c5sc01636c
日期:——
A user-friendly protocol for the Pd-catalyzed direct [small beta]-arylation of ketones is described, which avoids the use of stoichiometric heavy metals.
Palladium-catalyzed redox cascade for direct β-arylation of ketones
作者:Zhongxing Huang、Guangbin Dong
DOI:10.1016/j.tet.2018.03.017
日期:2018.6
design and development of two palladium-catalyzed redox cascade methods that enable direct β-arylation of ketones. Palladium-catalyzed ketone dehydrogenation, aryl-X bond activation and conjugate addition were merged into a redox-neutral catalytic cycle. Non-metal-based aryl electrophiles were used as both the oxidant and the aryl source. The β-arylation with aryliodides was achieved site-selectively
A new and efficient method for palladium(II) catalytic desulfitative conjugate addition of arylsulfinic acids with α,β-unsaturated carbonyl compound has been developed. The key reacting intermediates including aryl Pd(II) sulfinic intermediate, aryl Pd(II), and C═O—Pd complexes were captured by ESI-MS/MS, which provide new experimental evidence for the understanding of addition mechanism.
Pd(II)-Bipyridine Catalyzed Conjugate Addition of Arylboronic Acid to α,β-Unsaturated Carbonyl Compounds
作者:Xiyan Lu、Shaohui Lin
DOI:10.1021/jo051561h
日期:2005.11.1
A Pd(II)-catalyzed conjugate addition of arylboronicacid to α,β-unsaturated ketones, aldehydes, esters, etc. in the presence of 2,2‘-bipyridine was developed. A mechanism involving transmetalation, insertion of the carbon−carbon double bond into the C−Pd bond, and protonolysis of the resulting C−Pd bond is proposed. The reaction conditions are mild and the yield is high. The presence of 2,2‘-bipyridine
Palladium–bipyridine catalyzed conjugate addition of arylboronic acids to α,β-unsaturated carbonyl compounds in aqueous media
作者:Shaohui Lin、Xiyan Lu
DOI:10.1016/j.tetlet.2006.07.154
日期:2006.10
Palladium/bipyridine catalyzed conjugate addition of arylboronic acids to α,β-unsaturated carbonylcompounds in aqueous media was developed with high yields.