Process-scale preparation of enantiomerically pure b-lactones by asymmetric hydrogenation of beta-keto esters and comparative tests of the sensory properties of some antipodes (Articolo in rivista)

Type
Label
  • Process-scale preparation of enantiomerically pure b-lactones by asymmetric hydrogenation of beta-keto esters and comparative tests of the sensory properties of some antipodes (Articolo in rivista) (literal)
Anno
  • 2004-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.tetasy.2004.06.024 (literal)
Alternative label
  • Benincori, T.; Rizzo, S.; Pilati, T.; Ponti, A.; Sada, M.; Pagliarini, E.; Ratti, S.; Celentano, G.; de Ferra, L.; Sannicolò F. (2004)
    Process-scale preparation of enantiomerically pure b-lactones by asymmetric hydrogenation of beta-keto esters and comparative tests of the sensory properties of some antipodes
    in Tetrahedron: asymmetry (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Benincori, T.; Rizzo, S.; Pilati, T.; Ponti, A.; Sada, M.; Pagliarini, E.; Ratti, S.; Celentano, G.; de Ferra, L.; Sannicolò F. (literal)
Pagina inizio
  • 2289 (literal)
Pagina fine
  • 2297 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 15 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Benincori, T.: Università dell'Insubria, Dipartimento di Scienze Chimiche ed Ambientali, Via Valleggio, 11, Como 22100, Italy. Rizzo, S.; Pilati, T.; Ponti, A.: Istituto CNR Scienze e Tecnologie Molecolari, via G. Venezian, 21, Milan 20133, Italy. Sada, M.: Universita` di Milano, Dipartimento di Chimica Organica e Industriale via G. Venezian, 21, Milan 20133, Italy. Pagliarini, E.; Ratti, S.: Universita` di Milano, DISTAM-Sezione Tecnologie Alimentari, v. Celoria, 2, Milan 20133, Italy. Celentano, G.: Universita` di Milano, Istituto di Chimica Organica 'Alessandro Marchesini', via Golgi, 19, Milan 20133, Italy. de Ferra, L.: Chemi S.p.A., via Vadisi, 5 Patrica (Frosinone) 03010, Italy. Sannicolò F.: Istituto CNR Scienze e Tecnologie Molecolari, via G. Venezian, 21, Milan 20133, Italy; Universita` di Milano, Dipartimento di Chimica Organica e Industriale via G. Venezian, 21, Milan 20133, Italy. (literal)
Titolo
  • Process-scale preparation of enantiomerically pure b-lactones by asymmetric hydrogenation of beta-keto esters and comparative tests of the sensory properties of some antipodes (literal)
Abstract
  • A reliable methodology, applicable on a process-scale level, for producing enantiomerically pure chiral c-lactones by enantioselective hydrogenation of c-ketoesters, followed by cyclisation of the resulting c-hydroxyesters, has been developed. The multi-step procedure was transformed into a one-pot reaction. A very efficient chiral Ru-complex, based on the biheteroaromatic diphosphine ligand tetraMe-BITIOP, was developed as a catalyst, capable ofcoupling fast kinetics with high stereoselection levels. Its structure was fully elucidated through 31P NMR, EPR and X-ray single-crystal analyses. The optimal experimental conditions are as follows: hydrogen pressure=30 psi, S/C ratio=2000, 30% in weight substrate concentration. Yields are quantitative and enantiomeric excesses in the range 98-99.9%. Sensorial tests on the antipodes oftwo c-lactones demonstrated the very different properties ofthe enantiomers. (literal)
Prodotto di
Autore CNR

Incoming links:


Prodotto
Autore CNR di
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi
data.CNR.it