42371-66-4Relevant academic research and scientific papers
Palladium-catalyzed aerobic oxidative cross-coupling reactions of terminal alkynes with alkylzinc reagents
Chen, Mao,Zheng, Xiaolong,Li, Wenqing,He, Jun,Lei, Aiwen
supporting information; experimental part, p. 4101 - 4103 (2010/05/14)
Chemical Equation Represented With air as the oxidant, terminal alkynes can be directly cross-coupled with alkylzinc reagents in the presence of a Pd catalyst at room temperature. CO was found to be critical in gaining high chemical yields and selectivities. A wide range of alkynes and alkylzinc reagents were tested, and good to excellent yields were obtained. Copyright
Ligand-switchable directing effects of tethered alkenes in nickel-catalyzed additions to alkynes
Miller, Karen M.,Jamison, Timothy F.
, p. 15342 - 15343 (2007/10/03)
Nickel-catalyzed reductive couplings of aldehydes with alkynes that contain tethered olefins are described, in which the degree and sense of regioselectivity are controlled by the length of the tether and the presence or absence of an additive. When the a
REDUCTION DE DERIVES D'ALCOOLS PROPARGYLIQUES CATALYSEE PAR UN COMPLEXE DE PALLADIUM ZEROVALENT
Colas, Yann,Cazes, Bernard,Gore, Jacques
, p. 165 - 173 (2007/10/02)
Catalysis by tetrakis(triphenylphosphine)palladium of the reaction of hydride donnors with secondary propargylic bromides, mesylates and phosphates increases markedly the amount of allene produced.The best results in that direction are obtained with mesylates and phosphates by using lithium triethylborohydride.The reaction then occurs with an ANTI introduction of the hydride with respect to the leaving group.A mechanism is proposed which explains the influence of the various parameters of the reaction.
REGIO ET STEREOCHIMIE DE LA REDUCTION DE DERIVES D'ALCOOLS PROPARGYLIQUES CATALYSEE PAR UN COMPLEXE DE PALLADIUM (O)
Colas, Yann,Cazes, Bernard,Gore, Jacques
, p. 845 - 848 (2007/10/02)
Regio and stereoselectivity of the palladium catalyzed reduction of propargylic halides and esters is greatly influenced by the nature of the hydride donor as by the leaving group.Best results in allene formation are observed in the reduction by lithium triethylborohydride of mesylates and phosphates.In the former case, reaction occurs with anti displacement of the sulfonyl group.
