1980
DOI: 10.1016/s0040-4039(01)85465-4
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Sulfur participation in solvolysis involving four-membered ring intermediates

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Cited by 24 publications
(16 citation statements)
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“…The authors rationalized this observation by invoking the participation of the furan oxygen atom in the base-catalyzed cyclization. Sulfur is also known to participate to give thietanium, [59,60] thiolanium, [61,62] and thianium ions. Edstrom and Livinghouse have reported the reaction of electron-rich arene nucleophiles with thiiranium ions in the presence of silver salts.…”
Section: Synthesis Of Nitrogen-containing Heterocyclesmentioning
confidence: 99%
“…The authors rationalized this observation by invoking the participation of the furan oxygen atom in the base-catalyzed cyclization. Sulfur is also known to participate to give thietanium, [59,60] thiolanium, [61,62] and thianium ions. Edstrom and Livinghouse have reported the reaction of electron-rich arene nucleophiles with thiiranium ions in the presence of silver salts.…”
Section: Synthesis Of Nitrogen-containing Heterocyclesmentioning
confidence: 99%
“…Bislang hat sich die Diskussion hauptsächlich um Thiiraniumionen gedreht, die durch [1,2]‐Sulfanyl‐Beteiligung entstanden sind (dies ist bei weitem das üblichste Beispiel der Schwefel‐Beteiligung). Schwefel‐Beteiligung kann jedoch auch zur Bildung von Thietaniumionen,59, 60 Thiolaniumionen61, 62 und Thianiumionen führen 62, 63. Wir beschäftigen uns hier nur mit Thiolaniumionen, da Schwefel‐Beteiligung zur Bildung von Vier‐ und Sechsringen kinetisch ungünstiger und daher weniger gut dokumentiert ist.…”
Section: Thiolaniumionen Und [14]‐rs‐beteiligungunclassified
“…Treatment of a series of 4-phenylsulfanyl-1,3-diols with toluene-p-sulfonyl chloride in pyridine gives stereospecifically substituted allylic alcohols in near quantitative yield via a [1,4]-SPh shift. We comment on the structural variation at both the migration origin and terminus on the outcome of the title reaction and define its limits.…”
mentioning
confidence: 99%
“…We comment on the structural variation at both the migration origin and terminus on the outcome of the title reaction and define its limits. [1,4]-SR Participation by a sulfur atom via a five-membered sulfonium ion intermediate is a well documented effect. 1 The majority of attention has been concerned with the rate of acceleration of simple substitution reactions.…”
mentioning
confidence: 99%
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