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Titolo:
NEW DIOXOMOLYBDENUM(VI) CATALYSTS FOR THE SELECTIVE OXIDATION OF TERMINAL N-ALKENES WITH MOLECULAR-OXYGEN
Autore:
HERRMANN WA; LOBMAIER GM; PRIERMEIER T; MATTNER MR; SCHARBERT B;
Indirizzi:
TECH UNIV MUNCHEN WEIHENSTEPHAN,INST ANORGAN CHEM,LICHTENBERGSTR 4 D-85747 GARCHING GERMANY HOECHST AG,CENT RES LABS D-65926 FRANKFURT GERMANY
Titolo Testata:
Journal of molecular catalysis. A, Chemical
fascicolo: 1-3, volume: 117, anno: 1997,
pagine: 455 - 469
SICI:
1381-1169(1997)117:1-3<455:NDCFTS>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
NUCLEAR MAGNETIC-RESONANCE; AEROBIC EPOXIDATION; COMPLEXES;
Keywords:
CATALYSIS; OXIDATION; OLEFINS; EPOXIDES; MOLYBDENUM;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
35
Recensione:
Indirizzi per estratti:
Citazione:
W.A. Herrmann et al., "NEW DIOXOMOLYBDENUM(VI) CATALYSTS FOR THE SELECTIVE OXIDATION OF TERMINAL N-ALKENES WITH MOLECULAR-OXYGEN", Journal of molecular catalysis. A, Chemical, 117(1-3), 1997, pp. 455-469

Abstract

New dioxomolybdenum(VI) complexes of the type MoO(2)L(2) [L = (2'-pyridyl)alcoholate] are able to change considerably the product distribution of the metal catalyzed autoxidation process. With the catalyst O-{(2'-pyridyl)pentan-3-olato}]dioxomolybdenum(VI) (2) the epoxide is formed as the main product in the autoxidation process of 1-octene. The product selectivity is increased from 24% (epoxide, autoxidation) to 58% upon treatment of 1-octene with molecular oxygen (1 bar and 100 degrees C) in the presence of 2. An additional advantage is that the catalyst can be recovered. The synthesis and the characterization of the new dioxomolybdenum(VI) complexes and the ligands is described in addition to their catalytic properties. The structure of the new complex ,O-{(2'-pyridyl)pentan-3-olato}dioxomolybdenum(IV) (2) was determined by X-ray diffraction: monoclinic space group P 2(1)/c, a=1444.5(2) pm, b=1052.3(1) pm, c=1511.5(2) pm, beta = 115.86(1)degrees, V = 2068(1)10(6) pm(3). The epoxidation data indicate an important influence of the ligand sphere of the catalyst on the product distribution. We have nowthe possibility of fine tuning the complexes in the metal catalyzed autoxidation reaction.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/09/20 alle ore 05:47:45