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Titolo:
PALLADIUM-CATALYZED HOMOCOUPLING REACTIONS OF ORGANIC TELLURIDES
Autore:
NISHIBAYASHI Y; CHO CS; OHE K; UEMURA S;
Indirizzi:
KYOTO UNIV,GRAD SCH ENGN,DEPT ENERGY & HYDROCARBON CHEM,SAKYO KU KYOTO 60601 JAPAN KYOTO UNIV,GRAD SCH ENGN,DEPT ENERGY & HYDROCARBON CHEM,SAKYO KU KYOTO 60601 JAPAN
Titolo Testata:
Journal of organometallic chemistry
fascicolo: 2, volume: 526, anno: 1996,
pagine: 335 - 339
SICI:
0022-328X(1996)526:2<335:PHROOT>2.0.ZU;2-K
Fonte:
ISI
Lingua:
ENG
Soggetto:
CROSS-COUPLING REACTIONS; CARBON-MONOXIDE; CARBONYLATION; SALTS;
Keywords:
PALLADIUM; TELLURIUM; HOMOCOUPLING; ORGANIC TELLURIDES; CHALCOGENIDE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
19
Recensione:
Indirizzi per estratti:
Citazione:
Y. Nishibayashi et al., "PALLADIUM-CATALYZED HOMOCOUPLING REACTIONS OF ORGANIC TELLURIDES", Journal of organometallic chemistry, 526(2), 1996, pp. 335-339

Abstract

Organic tellurides containing a styryl moiety react in acetonitrile to give the corresponding homocoupling products, 1,3-dienes, with moderate to quantitative yields in the presence of a catalytic amount of Pd(OAc)(2) together with AgOAc at 25 degrees C. In contrast, such homocoupling reactions hardly occur with diaryl, alkyl aryl, dialkyl, and alkynyl aryl tellurides, even at reflux temperature and in the presence of a stoichiometric amount of palladium salt, in disagreement with reported results. The result of cross-over experiments suggests that thishomocoupling reaction occurs between an alkenyl telluride and an alkenylpalladium species, the latter being formed via the migration of an alkenyl moiety from Te to Pd (transmetallation).

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 10/07/20 alle ore 09:25:08