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- W2119887030 abstract "Tris(trimethylsilyl)phosphin reagiert mit Pivaloylchlorid bei +20°C in Cyclopentan zur Enolform des Pivaloylbis(trimethylsilyl)phosphins. In dieser Verbindung ist eine Trimethylsilylgruppe an das Phosphor-, die zweite an das Sauerstoffatom gebunden. Die NMR-Spektren der Reaktion bei −10°C in Monoglyme zeigen, daß sich zuerst die thermisch instabile Ketoform mit zwei Trimethylsilylgruppen am Phosphoratom bildet, die sich bei Temperaturerhöhung umlagert. Substitution der zweiten Trimethylsilylgruppe führt zur Enolform des Dipivaloyltri methylsilylphosphins. In Nebenreaktionen entstehen Tripivaloylphosphin mit drei an das Phosphoratom gebundenen Acylgruppen und durch Decarbonylierung die Enolform des tert. Butylpivaloyltrimethylsilylphosphins. Syntheses and Properties of Acylphosphines. II. Compounds from the Reaction of Tris(trimethylsilyl)phosphine with Pivaloyl Chloride Tris(trimethylsilyl)phosphine reacts with pivaloyl chloride at +20°C in cyclopentane to form the enol form of pivaloylbis(trimethylsilyl)phosphine. In this compound one trimethylsilyl group is bound to phosphorus, the other to oxygen. As the n.m.r. spectra of the reaction at −10°C in monoglyme show the thermally instable keto form with two trimethylsilyl groups bound to phosphorus is formed first and rearranges at slightly elevated temperatures. Substitution of the second trimethylsilyl group yields the enol form of dipivaloyltrimethylsilylphosphine. Tripivaloylphosphine with three acyl groups bound to phosphorus and the enol form of tert. butylpivaloyltrimethyl-silylphosphine are produced in side reactions." @default.
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- W2119887030 date "1977-04-01" @default.
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- W2119887030 title "Bildung und Eigenschaften von Acylphosphinen. II. Verbindungen aus der Reaktion von Tris(trimethylsilyl)phosphin mit Pivaloylchlorid" @default.
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- W2119887030 doi "https://doi.org/10.1002/zaac.19774300107" @default.
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