- An indium-TMSCl promoted reaction of diphenyl diselenide and diorganyl disulfides with aldehydes: novel routes to selenoacetals, thioacetals and alkyl phenyl selenides
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The reactions of diphenyl diselenide and dialkyl disulfides with aldehydes in the presence of In-TMSCl have been investigated. Aliphatic aldehydes provide the corresponding selenoacetals and aromatic aldehydes lead predominantly to benzyl phenyl selenides
- Ranu, Brindaban C.,Saha, Amit,Mandal, Tanmay
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experimental part
p. 2072 - 2078
(2009/07/11)
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- Anodic Oxidation of (Trimethylsilyl)methanes with ?-Electron Substituents in the Presence of Nucleophiles
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It was found that oxidation potentials of methanes with ?-electron substituents were decreased by introduction of a trimethylsilyl group.The anodic oxidation of benzyl-, allyl-, aryl(or alkyl)thiomethyl-, and aryloxymethyl-substituted trimethylsilanes smoothly proceeded in the presence of nucleophiles, e.g. alcohols and carboxylic acids, to eliminate the trimethylsilyl groups giving the corresponding alkoxylated and carboxylated products in moderate or high yields without full optimization of electrolytic conditions, while aminomethylsilanes did not undergo such a kind of anodic oxidation.
- Koizumi, Toshio,Fuchigami, Toshio,Nonaka, Tsutomu
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p. 219 - 225
(2007/10/02)
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- SYNTHESIS OF 5-ARYL- AND 5-ALKYL-4-ETHOXYCARBONYL-2-METHYLTHIO-1,3-THIAZOLES FROM DIMETHYL N-(ETHOXY-CARBONYLMETHYL)IMINODITHIOCARBONATE AND DITHIOESTERS
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In this paper we give account of an efficient synthesis of 5-aryl- and 5-alkyl-4-ethoxycarbonyl-2-methylthio-1,3-thiazoles from dimethyl N-(ethoxycarbonylmethyl)iminodithiocarbonate and dithioesters.
- Alonso, G.,Alvarez-Ibarra, C.,Orellana, G.,Quiroga, M. L.
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p. 215 - 220
(2007/10/02)
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- Electroreduction of Organic Compounds, 9. - Convenient Electrochemical Preparation of Thioacetals from Dithioesters
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Thioacetals are obtained as main products on electroreduction of alkyl dithiocarboxylates of various types in the presence of dimethyl sulfate in methanol. (Z)- and (E)-1,2-diaryl-1,2-bis(methylthio)ethenes are formed as byproducts.No reduction to form be
- Drosten, Gisela,Mischke, Peter,Voss, Juergen
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p. 1757 - 1762
(2007/10/02)
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- Electroreduction of Organic Compounds, 2. - Preperation of Dithioacetals by Electroreductive Alkylation of Alkyl Dithiocarboxylates
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Alkyl Dithiobenzoates 1 and O-methyl thiobenzoate (7) yield the benzaldehyde dithioacetals 2 or monothioacetals 8, respectively, by electroreduction in the presence of alkyl halides.The S-acylal 3b is formed from ethyl dithiobenzoate 1b in the presence of acetic anhydride. - The dithioacetals 5 and the ketene dithioacetals 6 are obtained by co-electroreduction of methyl dithiopropionate (4) with alkyl halides. - Conclusions about the reaction mechanism are drawn from voltammetric measurements.
- Kistenbruegger, Lothar,Voss, Juergen
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p. 472 - 480
(2007/10/02)
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