1983
DOI: 10.1021/ja00341a060
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Cation radical catalyzed olefin cyclodimerization

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Cited by 102 publications
(68 citation statements)
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“…1,5 Compared to strictly thermal reactions of the neutral olefins and diolefins, the rates of both [2 + 2] and [2 + 4] coupling reactions are enormously accelerated by radical cation initiation. 6,7 For reasons to be discussed below, application of this reaction has been largely restricted to "activated" olefins having comparatively low oxidation potentials. The present paper follows our previous communication, 8 and offers a full report on extension of the radical-cation catalyzed [2 + 2] cycloaddition reaction to unactivated olefins having relatively high oxidation potentials.…”
Section: Introductionmentioning
confidence: 99%
“…1,5 Compared to strictly thermal reactions of the neutral olefins and diolefins, the rates of both [2 + 2] and [2 + 4] coupling reactions are enormously accelerated by radical cation initiation. 6,7 For reasons to be discussed below, application of this reaction has been largely restricted to "activated" olefins having comparatively low oxidation potentials. The present paper follows our previous communication, 8 and offers a full report on extension of the radical-cation catalyzed [2 + 2] cycloaddition reaction to unactivated olefins having relatively high oxidation potentials.…”
Section: Introductionmentioning
confidence: 99%
“…Arylamine cationradicals can add to alkenes. [31][32][33] Therefore, the formation of addition compounds between aniline and alkenes would be strong evidence for the intermediacy of anilinium cation-radical.…”
Section: Polymerization Of Aniline In the Presence Of Alkenesmentioning
confidence: 99%
“…Electron transfer from an electron-rich styrene to a triarylaminium cation-radical has been well docu- mented. 32,33 We postulate that analogous electron transfer from p-methoxystyrene to our monoaryl aminium cation-radical will facilitate the oxidation of the former to 4-methoxybenzoic acid (Eq. 2).…”
Section: Polymerization Of Aniline In the Presence Of Alkenesmentioning
confidence: 99%
“…[5,6] Präparativ wird diese Reaktion so durchgeführt, dass bei 0 8C eine Lösung von 2 in Dichlormethan mit 5 Mol-% einer Lösung von 1C + SbCl 6 À versetzt wird, wobei in weniger als 10 Minuten das Dimer 3 in 45 % Ausbeute an isoliertem Produkt entsteht. [7] Das Aminiumsalz 1C + SbCl 6 À oxidiert das Substrat 2 zum Radikalkation 2C + , das an ein weiteres ¾quivalent 2 unter Bildung des dimeren Radikalkations 3C + addiert; dieses Addukt wird anschließend durch Substrat 2 zum Produkt 3 reduziert. Beide Radikalkationen konnten bisher in dieser Reaktion nicht direkt nachgewiesen werden.…”
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