http://www.cnr.it/ontology/cnr/individuo/prodotto/ID47951
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
- Pagina fine
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- 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
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