Pregled bibliografske jedinice broj: 1064566
Mechanism of the Isomerisation of Alkenes Induced by Polysufones
Mechanism of the Isomerisation of Alkenes Induced by Polysufones // Chimia
Zürich, Švicarska, 2003. str. 427-427 (predavanje, međunarodna recenzija, sažetak, znanstveni)
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Naslov
Mechanism of the Isomerisation of
Alkenes Induced by Polysufones
Autori
Dean Marković, Pierre Vogel
Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni
Izvornik
Chimia
/ - , 2003, 427-427
Skup
Swiss Chemical Society
Mjesto i datum
Zürich, Švicarska, 17.09.2003
Vrsta sudjelovanja
Predavanje
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
mechanistic studies, SO2, alkene isomerizations
Sažetak
When dissolved in S02 methylidenecyclopentane undergo formation of poly(methylidenecyclopentane sulfone) and iso1nerisation into 1-methylcyclopent-1-ene. EPR studies of the copolymerisation reaction confirm the presence of sulfonyl and carbon centred radicals. If Bu3SnH or TEMPO are added to the reaction mixture neither polysulfone nor isomerised olefin are seen. Kinetics of the isotnerisation and polymerisation reactions with 1/1. 1 mixture of the methylidenecyclopentane and sulfur dioxide confirmed the role ofpolysulfone in the isomerisation reaction. Mechanistical studies shows that sulfonyl radicals trapped in the polysulfone can catalyze the isomerisation. It occurs via the intermediary of methylidenecyclopent-2-yl radical (radical chain process (eq. 3.)), as demonstrated by deuterium labelling experiments. This is not the mechanism proposed earlier.
Izvorni jezik
Engleski
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus
