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• W2081427110 abstract "2,4,6-Trisubstituierte λ3-Phosphorine (1) reagieren mit Diazoalkanen (2) in Gegenwart von protischen Nucleophilen (3) (Alkoholen, Phenolen, Thiolen, Aminen) zu 1-alkyl-1-hetero-substituierten λ5-Phosphorinen (4, lfd. Nr. 1–39), deren Eigenschaften beschrieben werden. Der Mechanismus der Reaktion wird im Primärschritt als nucleophiler Angriff des Diazoalkans am Phosphoratom, einer Umpolung des negativ zum positiv geladenen Phosphors durch Abspaltung des Stickstoffs mit einem nachfolgenden Angriff des Nucleophils am Phosphoratom und Protonierung des anionischen Alkylrestes gedeutet. Organische Azide in Gegenwart von Alkoholen oder Phenolen reagieren analog zu 1-alkyloxy- bzw. 1-aryloxy-1-alkylamino- bzw. -arylamino-substituierten λ5-Phosphorinen. In Abwesenheit von Nucleophilen konnte mit Diphenyldiazomethan eine Verbindung 11 erhalten werden. Ihre Bildung wird unter Annahme des gleichen Primärschrittes diskutiert. The Reaction of λ3-Phosphorins with Diazoalkanes in the Presence of Protic Nucleophiles to Form 1-Alkyl-1-hetero-substituted λ5-Phosphorins 2,4,6-Trisubstituted λ3-phosphorins (1) react with diazoalkanes (2) in the presence of protic nucleophiles (3) (alcohols, phenols, thiols, amines) to produce 1-alkyl-1-hetero-substituted λ5-phosphorins (4, No. 1–39), the properties of which are described. The mechanism of this reaction is considered as a nucleophilic attack of the diazoalkane at the phosphorus atom in the primary step; with elimination of nitrogen the charge of phosphorus is changed from negative to positive so that subsequently attack of the nucleophile at the phosphorus atom and protonation of the anionic alkyl residue are possible. Organic azides in the presence of alcohols or phenols react analogously affording 1-alkyloxy- or 1-aryloxy-1-alkylamino- or -arylamino-substituted λ5-phosphorins. In the absence of the nucleophile with diphenyldiazomethane compound 11 has been isolated. Its formation is discussed as occurring via the same initial step." @default.
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• W2081427110 date "1975-11-01" @default.
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• W2081427110 title "Die Reaktion von λ3-Phosphorinen mit Diazoalkanen in Gegenwart von protischen Nucleophilen zu 1-alkyl-1-hetero-substituierten λ5-Phosphorinen" @default.
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• W2081427110 doi "https://doi.org/10.1002/cber.19751081128" @default.
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