16510-80-8Relevant articles and documents
Anion-Binding Catalysis by Electron-Deficient Pyridinium Cations
Berkessel, Albrecht,Das, Somnath,Pekel, Daniel,Neud?rfl, J?rg-M.
supporting information, p. 11660 - 11664 (2016/02/18)
A new activation principle in organocatalysis is presented: halide binding through Coulombic interactions. This mode of catalysis was realized by using 3,5-di(carbomethoxy)pyridinium ions that carry an additional electron-withdrawing substituent on the nitrogen atom, for example, pentafluorobenzyl or cyanomethyl. For the N-pentafluorobenzyl derivative, Coulombic interaction with the pyridinium moiety is complemented in the solid state by anion-π interactions with the perfluorophenyl ring. Bromide and chloride are bound by these cations in a 1:1 stoichiometry. Catalysis of the C-C coupling between 1-chloroisochroman (and related electrophiles) with silyl ketene acetals occurs at -78 °C and at low catalyst loading (2 mol %).
Dicationic palladium(II)-spiro bis(isoxazoline) complex for highly enantioselective isotactic copolymerization of CO with styrene derivatives
Bajracharya, Gan B.,Koranne, Priti S.,Tsujihara, Tetsuya,Takizawa, Shinobu,Onitsuka, Kiyotaka,Sasai, Hiroaki
scheme or table, p. 310 - 314 (2009/07/18)
The enantioseletive alternating copolymerization of CO with styrene derivatives catalyzed by a dicationic palladium(II) complex of tetra isopropyl-substituted spiro bis(isoxazoline) (i-Pr-SPRIX) is developed. This polymerization proceeded efficiently to p
Anodic Oxidation of 1-Aryl-2,2-dihalogenocyclopropanes in Methanol or Acetonitrile Media
Lin, Shaw-Tao,Yao, Yi-Fen,Jih, Yuh-Fehng,Lin, Lee-Huey
, p. 2011 - 2024 (2007/10/03)
3-Aryl-1,1-dichloro-3-methoxypropenes, methyl 3-aryl-3-methoxypropionates and 3-acetamido-3-aryl-1,1-dichloropropenes were obtained along with N-acetyl-4-aryllactams via anodic oxidation of 1-aryl-2,2-dichlorocyclopropanes in methanol and acetonitrile solutions, respectively.
