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Titolo:
Epoxidation of alkenes with H2O2 generated in situ from alcohols and molecular oxygen using N-hydroxyphthalimide and hexafluoroacetone as catalysts
Autore:
Iwahama, T; Sakaguchi, S; Ishii, Y;
Indirizzi:
Kansai Univ, Dept Appl Chem, Fac Engn, Osaka 5648680, Japan Kansai Univ Osaka Japan 5648680 ppl Chem, Fac Engn, Osaka 5648680, Japan Kansai Univ, High Technol Res Ctr, Osaka 5648680, Japan Kansai Univ Osaka Japan 5648680 gh Technol Res Ctr, Osaka 5648680, Japan
Titolo Testata:
HETEROCYCLES
fascicolo: 2, volume: 52, anno: 2000,
pagine: 693 - 705
SICI:
0385-5414(20000201)52:2<693:EOAWHG>2.0.ZU;2-H
Fonte:
ISI
Lingua:
ENG
Soggetto:
AEROBIC EPOXIDATION; HYDROGEN-PEROXIDE; OXIDATION; OLEFINS; ALDEHYDE; COMPLEX; NICKEL(II); COBALT(II); IRON(III); SYSTEM;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
65
Recensione:
Indirizzi per estratti:
Indirizzo: Iwahama, T Kansai Univ, Dept Appl Chem, Fac Engn, Osaka 5648680, Japan Kansai Univ Osaka Japan 5648680 ac Engn, Osaka 5648680, Japan
Citazione:
T. Iwahama et al., "Epoxidation of alkenes with H2O2 generated in situ from alcohols and molecular oxygen using N-hydroxyphthalimide and hexafluoroacetone as catalysts", HETEROCYCLE, 52(2), 2000, pp. 693-705

Abstract

A new epoxidation method of olefins with hydrogen peroxide and/or a-hydroxy hydroperoxide which are generated in situ from an alcohol and molecular oxygen was developed. A variety of alkenes were smoothly epoxidized with molecular oxygen in the presence of an alcohol under the influence of hexafluoroacetone (HFA) and N-hydroxyphthalimide (NHPI) as catalysts. The reaction involves the formation of alpha-hydroxy hydroperoxide and/or hydrogen peroxide derived from 1-phenylethanol and dioxygen by the action of NHPI and theactive oxygen transfer from these hydroperoxides to HFA, giving 2-hydroperoxyhexafluoro-2-propanol which serves as the actual epoxidizing agent.

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Documento generato il 29/09/20 alle ore 09:11:59