18689-32-2Relevant academic research and scientific papers
Palladium- and nickel-catalyzed coupling reactions of α- bromoalkenylphosphonates with arylboronic acids and lithium alkenylborates
Kobayashi, Yuichi,William, Anthony D.
, p. 1749 - 1757 (2007/10/03)
The coupling reaction of the α-bromoalkenylphosphonates with organoboranes was investigated. The palladium-catalyzed arylation took place successfully with arylboronic acids, while alkenylation proceeded with lithium alkenylborates and a nickel catalyst. In addition, an intramolecular Diels-Alder reaction of the diene prepared by the alkenylation afforded the corresponding adduct.
Coupling reactions of α-bromoalkenyl phosphonates with aryl boronic acids and alkenyl borates
Kobayashi, Yuichi,William, Anthony D.
, p. 4241 - 4244 (2007/10/03)
(equation presented) Transition metal-catalyzed arylation and alkenylation of the α-bromoalkenyl phosphonates were investigated with organoboranes and -borates. Arylation was successful with the aryl boronic acids and a palladium catalyst, while alkenylation was found to proceed with alkenyl borates and a nickel catalyst. In addition, an intramolecular Diels-Alder reaction of the diene prepared by the alkenylation afforded the corresponding adduct.
Phosphonic systems. Part XVI. Reaction of methyl propenylphosphonate carbanion with ketones. Reversal of the nucleophile-electrophile function
Muller, Elmar L.,Modro, Agnes M.,Modro, Tom A.
, p. 959 - 964 (2007/10/02)
Lithiated diethyl prop-2-enylphosphonate (allylic phosphonate anion) adds to ketones via the α-carbon (kinetic product) or the γ-carbon (thermodynamic product) of the allylic system.For enolizable ketones, the major reaction under thermodynamic conditions
