1346946-45-9Relevant academic research and scientific papers
Chiral-at-Metal Ruthenium Complexes with Guanidinobenzimidazole and Pentaphenylcyclopentadienyl Ligands: Synthesis, Resolution, and Preliminary Screening as Enantioselective Second Coordination Sphere Hydrogen Bond Donor Catalysts
Mukherjee, Tathagata,Ghosh, Subrata K.,Wititsuwannakul, Taveechai,Bhuvanesh, Nattamai,Gladysz, John A.
, p. 1163 - 1175 (2020)
Pentaphenylcyclopentadienyl ruthenium 2-guanidinobenzimidazole (GBI = HN≠C(NHH′)NHC(NHR)≠NR′) chelate complexes are accessed by treating (η5-C5Ph5)Ru(CO)2(Br) with Me3NO, GBI, and Ag+PF6-. Chromatographic workups give [(η5-C5Ph5)Ru(CO)(GBI)]+PF6- (2+PF6-,
Enantioselective enolate protonation in sulfamichael addition to r-substituted n-acryloyloxazolidin-2-ones with bifunctional organocatalyst
Rana, Nirmal K.,Singh, Vinod K.
supporting information; experimental part, p. 6520 - 6523 (2012/02/01)
Organocatalytic conjugate addition of thiols to R-substituted N-acryloyloxazolidin-2-ones followed by asymmetric protonation has been studied in the presence of cinchona alkaloid derived thioureas. Both of the enantiomers are accessible with the same level of enantioselectivity using pseudoenantiomeric quinine/quinidine derived catalysts. The addition/protonation products have been converted to useful biologically active molecules. 2011 American Chemical Society.
