Synthesis and crystal structures of palladium complexes based on α\alpha -amino-oximes derived from (RR)-limonene and their application in allylic alkylation of 1,3-dioxo compounds

Coordination compounds Pd(L1)Cl$_{2}$, Pd(L2)Cl$_{2}$, and Pd(L3)Cl$_{2}$ have been synthesized from optically pure $\alpha$-amino-oxime ligands L1–L3 based on $(R)$-limonene. Structures of the new palladium complexes are characterized and described by NMR spectroscopy and X-rays. These $\alpha$-amino-oxime ligands were then evaluated in the palladium-catalysed allylation of 1,3-dioxo compounds

Synthesis and crystal structures of palladium complexes based on α\alpha -amino-oximes derived from (RR)-limonene and their application in allylic alkylation of 1,3-dioxo compounds

Coordination compounds Pd(L1)Cl$_{2}$, Pd(L2)Cl$_{2}$, and Pd(L3)Cl$_{2}$ have been synthesized from optically pure $\alpha$-amino-oxime ligands L1–L3 based on $(R)$-limonene. Structures of the new palladium complexes are characterized and described by NMR spectroscopy and X-rays. These $\alpha$-amino-oxime ligands were then evaluated in the palladium-catalysed allylation of 1,3-dioxo compounds

El llenguatge en el dol : una aproximació a la pèrdua des de la Programació Neurolingüística

Els canvis provocats pel context causat per la Covid-19 han contribuït a replantejar els diferents àmbits de la vida social de les persones. El present treball d'investigació para atenció als impactes haguts sobre la mort i, al seu torn, sobre els processos que en deriven, donant pas a un dels fenòmens més capaços de re-significar aquests processos: el llenguatge. Serà mitjançant la Programació Neurolingüística, una de les pràctiques més esteses associada a les noves formes de creença de les últimes dècades, que s'establirà la relació entre el llenguatge i el dol, fent que el primer funcioni com a cos mateix del que no hi és i com a ritual d'acomiadament. Les paraules passen a ser, en elles mateixes, el llaç que uneix l'individu amb la seva pèrdua.Los cambios provocados por el contexto causado por el Covid-19 han contribuido a replantear los diferentes ámbitos de la vida social de las personas. El presente trabajo de investigación pone la atención en los impactos habidos sobre la muerte y, a su vez, sobre los procesos que derivan de ella, dando paso a uno de los fenómenos más capaces de resignificar dichos procesos: el lenguaje. Será a través de la Programación Neurolingüística, una de las prácticas más extendidas asociada a las nuevas formas de creencia de las últimas décadas, que se establecerá la relación entre el lenguaje y el duelo, haciendo que el primero funcione como el cuerpo mismo del que no está y como ritual de despedida. Las palabras pasan a ser, en sí mismas, el lazo que une el individuo con su pérdida.Changes caused by the Covid-19 context have contributed to stake out the different areas of people's social life. This research work focuses on the impact of death and, at the same time, on the derivated processes, inquiring into one of the most powerful phenomen in resignifying these processes: language. By using Neuro-linguistic Programming (one of the most extended practice associated with new forms of belief in recent decades) the relationship between language and grief will be stablished, allowing that the first one behaves as the missing body and as a farewell ritual. Words have become, by themselves, the nexus that join the individual with his missing

Caractérisations, Synthèses et propriétés catalytiques de complexes de Palladium et Molybdène coordinés par des ligands amino-oximes dérivés du (R)-limonène

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Efficient and Sustainable One-pot Synthesis of alpha-Carbonyl Homoallylic Alcohols from Benzaldehyde and Allylic Alcohols Using both NHC and Nickel Catalysts

International audienceα-carbonyl homoallylic alcohols have been synthesized in a one-pot reaction from benzaldehyde and allylic alcohols. The nickel-catalyzed allylation of α-hydroxyketones has first been studied and allowed the identification of Ni(cod)2/dppf as the most suitable catalytic system. The tandem reaction that combines the benzoin condensation of aldehydes (synthesis of α-hydroxyketones) promoted by the 1,3-dimethylimidazolium chloride/DBU system and the nickel-catalyzed allylic alkylation with allylic alcohol has been realized in EtOH as green solvent. The reaction is 100 % atom-economical and water is formed as sole by-product. A broad scope of different benzaldehyde derivatives as well as various allylic alcohols is also described

Synthesis and crystal structure of a new chiral alpha-aminooxime nickel(II) complex

International audienceA dinuclear nickel complex with (S)-limonene based amino­oxime ligand has been isolated and its crystal structure determined. The resolved structure of dichloridobis­{(2S,5R)-2-methyl-5-(prop-1-en-2-yl)-2-[(pyridin-2-yl)methyl­amino]­cyclo­hexan-1-one oxime}dinickel(II), [Ni2Cl2(C16H23ClN3O)2], at 100 K has monoclinic (P21) symmetry. The two NiII ions in the dinuclear complex are each coordinated in a distorted octa­hedral environment by three nitro­gen atoms, a terminal chloride and two μ bridging chlorides. Each oxime ligand is coordinated to nickel(II) by the three nitro­gen atoms, leading to two five-membered chelate rings, each displaying an envelope conformation. In the crystal, numerous inter­molecular and intra­molecular hydrogen bonds lead to the formation of a three-dimensional network structure