177,617 research outputs found
Maria Luisa Spaziani, Il mestiere di profeta
No full textIntroduzione, nota al testo, note e pubblicazione di una conferenza inedita di M.L. Spaziani che rivela aspetti inediti della propria opera poetica a partire dal testo Il mestiere di profeta che indugia su strategie testuali poetiche. Provenienza: Fondo di poesia Pietro Tordi
Sequence type and capsular type information for 173 Klebsiella spp. isolates
No full textThis dataset was constructed by the use of bioinformatics software for the pathogenicity (PI), Resistance Islands, and Miscellaneous Islands (MIS) predictions in the genome of strain B31 of Klebsiella pneumoniae, as well as the sequence type and capsular type information of this strain and other 172 publicly available K. pneumoniae strains
Reaction of α-Amidoalkylphenyl Sulfones with Lithiated Nitriles. syn-Selective Synthesis of β-Amino Nitriles
No full textA further comment on ageing and the welfare state
No full textThis symposium was initiated as a forum for discussion of issues about ageing and the welfare state stemming from the paper by Razin, Sadka, and Swagel, "The ageing population and the size of the welfare state", which appeared in the Journal of Political Economy in 2002 (vol. 110 (4) pp. 900-918). We here comment on the contribution of Razin and Sadka to the symposium. © 2006 Elsevier B.V. All rights reserved
Common effect of chemical and external pressures on the magnetic properties of RCoPO (R = La, Pr, Nd, Sm). II.
No full textWe investigate the direct correspondence between Co band ferromagnetism and structural parameters in the pnictide oxides RCoPO for different rare-earth ions (R = La, Pr, Nd, Sm) by means of muon-spin spectroscopy and ab initio calculations, complementing our results published previously [G. Prando et al., Common effect of chemical and external pressures on the magnetic properties of RCoPO (R = La, Pr), Phys. Rev. B 87, 064401 (2013)]. We find that both the transition temperature to the ferromagnetic phase T-C and the volume of the crystallographic unit cell V are conveniently tuned by the R ionic radius and/or external pressure. We report a linear correlation between T-C and V and our ab initio calculations unambiguously demonstrate a full equivalence of chemical and external pressures. As such, we show that R ions influence the ferromagnetic phase only via the induced structural shrinkage without involving any active role from the electronic f degrees of freedom, which are only giving a sizable magnetic contribution at much lower temperatures
Reactivity of chiral alpha-amidoalkylphenyl sulfones with stabilized carbanions. Stereoselective synthesis of optically active 1-aminopyrrolizidine
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Synthesis of Secondary Amines by Reduction of alpha-Amidoalkylphenyl Sulfones with Sodium Acetoxyborohydride
No full textReaction of allylzinc reagents and zinc enolates of ketones with alpha-amidoalkylphenyl sulfones
No full textReaction of Allylzinc Reagents and Zinc Enolates of Ketones with α-Amidoalkylphenyl Sulfones
No full textα-Amidoalkylphenyl sulfones behave as N-acylimino equivalents in the reaction with functionalized allylzinc reagents. The addition products obtained using the zinc derivative of ethyl 2-(bromomethyl)-acrylate can be readily transformed into α-methylene-γ -lactams using different cyclization procedures. The allylzinc reagent obtained from 3-bromo-1-acetoxy-1-propene directly affords protected 1,2-amino alcohols with a preference for the anti stereoisomer, regardless of the structure of the α-amidoalkylphenyl sulfone employed. This procedure can be extended to the use of zinc enolates obtained from α-bromo ketones and leads to the synthesis of N-protected β-amino ketones
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