77742-28-0Relevant articles and documents
Self-assembly of Pd2L2 Metallacycles Owning Diversely Functionalized Racemic Ligands
Rama, Tamara,Alvari?o, Cristina,Domarco, Olaya,Platas-Iglesias, Carlos,Blanco, Víctor,García, Marcos D.,Peinador, Carlos,Quintela, José M.
, p. 2290 - 2298 (2016)
We present herein the efficient palladium(II)-directed self-assembly in water of a series of nine new diversely functionalized metallacycles, owning hydroxy/alkoxycarbonyl/azidoalkyl exo pendant groups attached to ditopic N-monoalkyl/aryl-4,4′-bipyridinium/2,7-diazapyrenium ligands. The highly convergent and versatile synthetic route for the ligands uses the Zincke reaction between (dinitrophenyl)bipyridinium/diazapyrenium salts and racemic amines as the key step. The stereochemical outcome of the self-assembly of the Pd2L2 species is discussed on the basis of density functional theory quantum-chemical calculations.
Burkholderia cepacia lipase is an excellent enzyme for the enantioselective hydrolysis of β-heteroaryl-β-amino esters
Tasnadi, Gabor,Forro, Eniko,Fueloep, Ferenc
experimental part, p. 1771 - 1777 (2009/12/28)
The enantioselective (E >200) lipase PS-catalysed hydrolysis of β-heteroaryl-β-amino esters is described. The reactions were performed with H2O (0.5 equiv) in either diisopropyl ether or tert-butyl methyl ether at 25 °C. The resulting β-heteroaryl-substituted β-amino acid enantiomers were formed in high enantiomeric excess (ee ≥ 97%) and in good yield (≥40%).