Hypervalent Iodine in Synthesis XXX: Palladium-Catalyzed Reaction of Diaryliodonium Salts with β-substituted-α, β-enones
摘要:
The reaction of diaryliodonium salts with beta-substituted-alpha,beta-enones in the presence of a palladium catalyst affords H-beta-substituted products with excellent yields.
palladium(0)-catalyzed, Cu(I)-mediated synthetic route to trisubstituted olefins and conjugate dienes has been developed via oxo directing Liebeskind–Srogl cross-coupling reactions of gem-dihaloolefin-type α-oxo ketene dithioacetals with aryl and alkenylboronic acids. The synthetic protocol has demonstrated rare examples of transition-metal-promoted transformations of ketene dithioacetals, providing a novel route to
example of photocatalytic cross-coupling of alkenes with aldehydes by a single catalyst without an external photosensitizer and any additives. Irradiation of the aromatic aldehyde and cobaloxime catalyst results in the formation of an acyl radical, which undergoes radical addition with alkene or indole and subsequently β-H elimination to afford alkenyl ketone. The reaction features cheap and readily available
97. Optical isomerism due to symmetrically placed hydrogen and deuterium atoms. Part II
作者:G. R. Clemo、R. Raper、A. C. Robson
DOI:10.1039/jr9390000431
日期:——
Hypervalent Iodine in Synthesis XXX: Palladium-Catalyzed Reaction of Diaryliodonium Salts with β-substituted-α, β-enones
作者:Min Xia、Zhen Chu Chen
DOI:10.1080/00397910008087149
日期:2000.4
The reaction of diaryliodonium salts with beta-substituted-alpha,beta-enones in the presence of a palladium catalyst affords H-beta-substituted products with excellent yields.