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- W2010034008 abstract "Die Ozonolyse des chinoiden Catenans 17 in Ethylacetat bei −40°C in Gegenwart von Tetracyanethylen ergibt nach Reduktion mit Natriumboranat und anschließender reduktiver Eliminierung der Hydroxylgruppen in einer Gesamtausbeute von 24% (bezogen auf 16) das kristalline Catenan 20a. Die Ozonolyse von 17 in Ethylacetat/Methanol (10:1) bei −26°C führt nach Reduktion der peroxidischen Zwischenstufen mit Dimethylsulfid und Reduktion der Carbonylgruppen zu einem Gemisch der Catenans 20a und seiner methyl- und ethylverzweigten Homologen 21a und 22a. Synthesis of [2]-[Azacyclohexacosane]-[cyclooctacosane]-catenane The ozonolysis of the quinoid catenane 17 in ethyl acetate at −40°C in the presence of tetracyanoethylene followed by reduction with sodium borohydride and reductive elimination of the hydroxy groups affords the crystalline catenane 20 a with 24% yield, based on 16. By ozonolysis of 17 in ethyl acetate/methanol (10:1) at −26 C, subsequent reduction of the peroxidic intermediates with dimethyl sulfide, and reduction of the carbonyl groups a mixture of the catenane 20 a and the methyl- and ethyl-branched homologues 21 a and 22 a is obtained." @default.
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- W2010034008 date "1978-07-01" @default.
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- W2010034008 title "Synthese von [2]‐[Azacyclohexacosan]‐[cyclooctacosan]‐catenan" @default.
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- W2010034008 doi "https://doi.org/10.1002/cber.19781110717" @default.
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