ZfN: Search Results

1	Author	Reinhard Lüdersdorf, Jürgen Mai, Klaus Praefcke	Requires cookie*
	Title	Synthese S-substituierter Benzile und einiger gehinderter Biphenyle [1] Synthesis of S-Substituted Benzils and Some Hindered Biphenyls [1]
	Abstract	Three methylthio and/or methylsulfinyl substituted benzils (2, 6 and 7) have been synthesized on photo-or thermochemical routes, respectively. Photodecarboxylation of some new different substituted mesityl benzoates (1 a-e) leads to hindered biphenyls (3 a-e) accompanied sometimes by aldehyde (4a-c) and benzil formation (2) due to compatitive a-cleavage and subsequent stabilization processes of such generated free aroyl radicals. A short summary on constitutional conditions for intramolecular photoredox reactions of ortho functionalized aryl sulfinyl compounds is presented.
	Reference	Z. Naturforsch. 35b, 1420—1425 (1980); eingegangen am 28. April 1980
	Published	1980
	Keywords	Photodecarboxylations, a-Cleavages, Photoredox Reactions, Sulfoxides
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	TEI-XML for	default:Reihe_B/35/ZNB-1980-35b-1420.pdf
	Identifier	ZNB-1980-35b-1420
	Volume	35

2	Author	Enno Lork, Ulrich Behrens, Detlef Viets, Rüdiger Mews	Requires cookie*
	Title	Die Kristallstruktur von A sF5 0 S C F 2S (0 2)CF2 The Crystal Structure of A sF 5 * 0& C F2S (0 2)C F 2
	Abstract	The crystal structure of AsF5 • 0$C F2S(02)CF2 is reported. It crystallizes in the orthorhombic space group Pnma with a = 749.1(3) pm, b = 770.6(3) pm and c = 1630.0(5) pm, V = 960.9(6)-106 pm3, Z = 4. Einleitung Intensiv ist in den letzten Jähen die Chemie der Dithietane F 2tS (O x)FyC F 2S(Ov)Fw im Arbeitskreis Sundermeyer [1] und von uns [2] untersucht wor den. Ein Ziel unserer Arbeiten war es, das D onor verhalten dieser Systeme gegenüber Fluor-Lewis-Säuren (AsF5, SbF5, BF3) zu untersuchen und die Grenzen zwischen Carbenium-, Sulfoniumsalz-und Addukt-Bildung zu erkennen. Durch Strukturun tersuchungen konnte belegt werden, daß AsF5 aus F2CSCF2S F " abstrahiert unter Bildung des cycli schen Carbeniumions FCSC F2S+ [lb]; nach IR-und 1' 9F-N M R -U ntersuchungen führt die analoge Umsetzung von F 7SCF?S(0")C F7 (n = 0 -2) zu Sul-foniumsalzen FSC F2S(0")CF2+ [lc], während in Sulfoxid-Derivaten die Lewis-Säure an den Sauer stoff unter Bildung von F 2CS(0")CF2S 0 • M F 5 (n = 0 -2) addiert wird. In der vorliegenden Arbeit be richten wir über die Struktur des Adduktes F2C S 0 2C F2S 0 • A sF5 (2 a).
	Reference	Z. Naturforsch. 49b, 422—424 (1994); eingegangen am 21. Oktober 1993
	Published	1994
	Keywords	Dithietanes, Sulfoxides, Adducts with Lewis-Acids, Crystal Structure
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	TEI-XML for	default:Reihe_B/49/ZNB-1994-49b-0422_n.pdf
	Identifier	ZNB-1994-49b-0422_n
	Volume	49

3	Author	Reinhard Lüdersdorf, Klaus Praefcke, *. Herrn, Prof Dr	Requires cookie*
	Title	eine neue photoinduzierte Sauerstoff-Transfer-Reaktion 1 Photoreactions of 2-Sulfinyl Substituted Benzaldehydes - a New Photoinduced Oxygen-Transfer Reaction
	Abstract	The photochemical conversion of 2-sulfinyl substituted benzaldehydes into benzoic acids in a new type of redox reaction is discribed in which a transfer of an oxygen atom, originally attached to sulphur, takes place by insertion into the C-H bond of the aldehyde function located in ortho position. Influences of substituents at the sulfinyl group in this photo-reaction which seems to be limitated to aldehydes are discussed briefly.
	Reference	(Z. Naturforsch. 31b, 1658—1661 [1976]; eingegangen am 2. September 1976)
	Published	1976
	Keywords	Organic Sulfur Compounds, Sulfoxides, Photoredox Reaction, Photorearrangement, Aromatic Photosubstitution
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	TEI-XML for	default:Reihe_B/31/ZNB-1976-31b-1658.pdf
	Identifier	ZNB-1976-31b-1658
	Volume	31