24131-01-9Relevant articles and documents
Organocatalytic Enantioselective Decarboxylative Protonation Reaction of Meldrum's Acid Derivatives under PTC Conditions
Legros, Fabien,Martzel, Thomas,Brière, Jean-Fran?ois,Oudeyer, Sylvain,Levacher, Vincent
, p. 1975 - 1983 (2018/05/15)
An original organocatalyzed enantioselective protonation sequence of a transient quaternary ammonium enolate species has been developed by starting from readily available disubstituted Meldrum's acid derivatives and phenols. Under phase-transfer-catalytic (PTC) conditions, chiral nonracemic 2-aryl propionic ester derivatives were obtained in good isolated yields with enantioselectivities up to 70 % ee. The usefulness of the approach was demonstrated by the synthesis of enantioenriched (S)-ibuprofen.
Arylations mediated by lead(IV) in the presence of formazan and imine ligands
Iqbal, Amjid,Moloney, Mark G.,Siddiqui, Hamid Latif,Thompson, Amber L.
experimental part, p. 4523 - 4525 (2009/12/03)
The use of formazan and imine ligands in arylations of β-dicarbonyl systems by phenyl boronic acid/lead(IV) carboxylates is examined.
Ligand exchange and catalysis in phenylation reactions mediated by lead tetracarboxylates
Moloney, Mark G.,Paul, Diana R.,Thompson, Russell M.,Wright, Emma
, p. 77 - 88 (2007/10/03)
An investigation of catalysis and ligand exchange in the arylation of nucleophiles with phenylboronic acid and mixed ligand lead(IV) complexes is described. Although this reaction is known to be catalyzed by mercury(II) acetate, other heavy metals have be