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Authors = Helmut Reinke

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11 pages, 190 KiB  
Article
Alkylation of Zwitterionic Thiooxalic Acid Derivatives
by Klaus Martens, Anke Scheunemann, Kerstin Drexler, Heinz Dehne, Helmut Reinke and Manfred Michalik
Molecules 2001, 6(6), 540-550; https://doi.org/10.3390/60600540 - 31 May 2001
Cited by 1 | Viewed by 8112
Abstract
The new S-alkyl thiooxal-1-hydrazono-2-amidrazonium halides 2-4 were synthesized by reaction of the corresponding zwitterionic thiooxalic acid derivatives 1 with alkyl halides in methanol. The structures of compounds 4b and 4d were proven by X-ray structural analysis. Both compounds form an interesting intermolecular network [...] Read more.
The new S-alkyl thiooxal-1-hydrazono-2-amidrazonium halides 2-4 were synthesized by reaction of the corresponding zwitterionic thiooxalic acid derivatives 1 with alkyl halides in methanol. The structures of compounds 4b and 4d were proven by X-ray structural analysis. Both compounds form an interesting intermolecular network of hydrogen bonds in the solid state. Full article
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7 pages, 69 KiB  
Article
Heterocyclic Tricycles as Internal N-Glycosides from 2-Methyl-5-nitro-6-(2-nitrophenyl)-4-phenyl(2-furyl)tetrahydropyranols
by Lutz Götze, Manfred Michalik, Klaus Peseke, José Quincoces and Helmut Reinke
Molecules 2000, 5(3), 245-251; https://doi.org/10.3390/50300245 - 16 Mar 2000
Viewed by 5872
Abstract
1-Methyl-10-nitro-11-phenyl(2-furyl)-2-aza-13-oxa-tricyclo[7.3.1.03,8]trideca-3,5,7-trienes 3 were synthesized via the reduction of the aromatic 2-nitro group of 2-methyl-5-nitro-6-(2-nitrophenyl)-4-phenyl(2-furyl)tetrahydropyranols 2 and subsequent condensation with their anomeric OH group. As by-products, the corresponding 6-(2-aminophenyl)-2-methyl-5-nitro-4-phenyl(2-furyl)tetrahydropyranols 4 were isolated. Full article
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