61077-69-8Relevant articles and documents
Enantioselective Inverse Electron Demand (3 + 2) Cycloaddition of Palladium-Oxyallyl Enabled by a Hydrogen-Bond-Donating Ligand
Zheng, Yin,Qin, Tianzhu,Zi, Weiwei
supporting information, p. 1038 - 1045 (2021/01/25)
Cycloaddition reactions between oxyallyl cations and alkenes are important transformations for the construction of ring systems. Although (4 + 3) cycloaddition reactions of oxyallyl cations are well-developed, (3 + 2) cycloadditions remain rare, and an as
Silver(I)-catalyzed reaction between pyrazole and propargyl acetates: Stereoselective synthesis of the scorpionate ligands (E)-allyl-gem-dipyrazoles (ADPs)
Bhanuchandra,Kuram, Malleswara Rao,Sahoo, Akhila K.
, p. 11824 - 11834 (2014/01/06)
The reaction between readily accessible pyrazole and propargyl acetates in the presence of Ag(I) catalyst yielded a new class of (E)-allyl-gem-dipyrazole scorpionate ligands: 1-aryl-2-N-pyrazolyl allyl acetates and 1,3-dipyrazolyl-3-arylpropene. The reaction showed broad substrate scope, and various functional and protecting groups were tolerated under the reaction conditions. The palladium(II) scorpionate complex could thus be easily prepared and successfully employed in Suzuki-Miyaura cross-couplings in water.
Gold-catalysed activation of epoxides: Application in the synthesis of bicyclic ketals
Balamurugan, Rengarajan,Kothapalli, Raveendra Babu,Thota, Ganesh Kumar
supporting information; scheme or table, p. 1557 - 1569 (2011/04/25)
Gold-catalysed generation of diol equivalents from epoxides and their intramolecular reaction with Ca≡C bonds to generate bicyclic ketals is presented. This reaction essentially involves the formation of an acetonide, which subsequently cyclises on the alkyne intramolecularly under gold catalysis conditions. This method could be extended to make optically pure bicyclic ketals. Deuterium incorporation experiments were carried out to ascertain the mechanism of the reaction. Sequential activation of epoxide and alkyne moieties by a gold catalyst in acetone as solvent has been achieved. This strategyhas been employed to synthesise bicyclic ketals from epoxy alkynes. Copyright