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Mostrando ítems 1-8 de 8
Artículo
Bifunctional Squaramide Organocatalysts for the Asymmetric Addition of Formaldehyde tert-Butylhydrazone to Simple Aldehydes
(Wiley-Blackwell, 2018)
The nucleophilic addition of formaldehyde tert-butylhydrazone to simple aldehydes (a formal hetero-carbonyl–ene reaction) can be performed with good reactivity and excellent enantioselectivity by virtue of the dual ...
Artículo
Pyridine–hydrazone ligands in enantioselective palladium-catalyzed Suzuki–Miyaura cross-couplings
(Elsevier, 2016)
The geometries and coordination properties of modular pyridineehydrazone N,N-ligands containing C2- symmetric trans-2,5-diphenylpyrrolidine and trans-2,5-diphenylpiperidine as the terminal dialkylamino units have been ...
Artículo
Artículo
Pyridine-Hydrazone Ligands in Asymmetric Palladium-Catalyzed 1,4- and 1,6-Additions of Arylboronic Acids to Cyclic (Di)enones
(Wiley-Blackwell, 2019)
Catalysts generated by combinations of Pd(TFA)2 and enantiomerically pure pyridine-hydrazone ligands have been applied to the 1,4-addition of arylboronic acids to β-substituted cyclic enones, building all-carbon quaternary ...
Tesis Doctoral
Ligandos de nueva generación basados en hidrazonas para aplicaciones en catálisis asimétrica
(2016-04-28)
La creciente demanda de compuestos enantioméricamente puros para su uso como fármacos, aromas, fragancias, productos agroquímicos y precursores de materiales poliméricos ha impulsado el desarrollo espectacular de la síntesis ...
Artículo
Asymmetric Organocatalytic Synthesis of Fluorinated β-Hydroxy Diazenes
(Wiley-Blackwell, 2019)
The nucleophilic addition of formaldehyde tert-butyl hydrazone to fluoromethyl ketones provides a valuable tool for the synthesis of highly functionalized β-hydroxy β-tri- and difluoromethyl diazenes. Excellent reactivities ...
Tesis Doctoral
Funcionalización asimétrica de compuestos carbonílicos mediante organocatálisis bifuncional
(2015-03-20)
OBJETIVOS La mayor parte de las investigaciones realizadas recientemente en el campo de la organocatálisis asimétrica se centran en el diseño de nuevos catalizadores de actividad mejorada y el desarrollo de nuevos procesos ...
Artículo
Solvent-free synthesis of quaternary alpha-hydroxy alpha-trifluoromethyl diazenes: the key step of a nucleophilic formylation strategy
(Royal Society of Chemistry, 2016)
An efficient, scalable and operationally simple one-pot, 2-step strategy for the nucleophilic formylation of trifluoromethyl ketones is presented. The key step is an unprecedented diaza-carbonyl-ene reaction of formaldehyde ...