1965
DOI: 10.1002/jlac.19656840111
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Zur Frage der Existenz von Sulfenen, I. Abfangen von Sulfenen durch Cycloaddition an Enamine

Abstract: Aus primaren Sulfochloriden und tertiaren Enaminen entstehen in Gegenwart von Triathylamin thermisch bis gegen 200" stabile p-Dialkylamino-trimethylensulfone (V). Fur diese Synthese eignen sich stark basische Enamine mit oder ohne P-H-Atom. Sekundare Sulfochloride bilden keine Trimethylensulfone. -Die Synthese der sehr schwach basischen Vierring-Sulfone wird als Cycloaddition des Enamins an in situ gebildetes Sulfen (RCH = S O 3 gedeutet.Es ist bekannt3), daR tertiare Amine aliphatischen Carbonsaurechloriden C… Show more

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Cited by 19 publications
(4 citation statements)
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“…Die thermische Stabilitat der 3-Amino-thietan-1 ,l-dioxide hangt von der Zahl und der Natur der Ringsubstituenten ab. 2-Methyl-3-piperidino-thietan-l,l-dioxid, 2-Athyl-3-morpholino-thietan-l,1 -dioxid tan [88,43,30,951 und bei der Amin-Elirninierung [94,89,92,951 Die Umwandlung ist von praparativem Interesse, da die …”
Section: 3311 (1965)unclassified
“…Die thermische Stabilitat der 3-Amino-thietan-1 ,l-dioxide hangt von der Zahl und der Natur der Ringsubstituenten ab. 2-Methyl-3-piperidino-thietan-l,l-dioxid, 2-Athyl-3-morpholino-thietan-l,1 -dioxid tan [88,43,30,951 und bei der Amin-Elirninierung [94,89,92,951 Die Umwandlung ist von praparativem Interesse, da die …”
Section: 3311 (1965)unclassified
“…18 Our preparation of 3-methyl-3-phenylthietane (1) was achieved by treatment of 2-methyl-2-phenyltrimethylene bis(benzensulfonate) with sodium sulfide in dimethyl sulfoxide. This modification of a standard thietane synthesis was also successful in preparing 3-isopropyl-3-phenylthietane (10) as well as the other 3,3-disubstituted (12) 66809-99-2 54-55 66810-41-1 133.5-134.5 1.77 (s,3H)' 7.21 (m, 5 H)…”
Section: Resultsmentioning
confidence: 93%
“…h Thietanes were coverted to sulfones, which analyzed for carbon and hydrogen within 0.3% of theory. higher yields, based on the common 1,3-diol precursors, were obtained using this procedure, e.g., 2-thiaspiro[3.5]nonane (12) was obtained in 26% yield from the dibromide, 42% from the cyclic carbonate, and 56% from the bis(benzenesulfonate) in ethylene glycol; our modification using the latter in dimethyl sulfoxide gave 75%. In our hands, 2-thiaspiro[3.5]-6-nonene (13) was formed in 34% yield via the cyclic carbonate method, while the bis(benzenesulfonate) procedure gave 67%.…”
Section: Resultsmentioning
confidence: 93%
“…Murata, and T. Nitta, Tetrahedron Lett., 3003 (1967); (g) S. I to, H. Takeshita, Y. Shoji, Y. Toyooka, and T. Nozoe, ibid., 3215 (1968). (8) (a) J. E. Baldwin and R. A. Smith, J. Amer.…”
mentioning
confidence: 99%