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- W2143278329 abstract "Die Reaktionen der α-, β- und γ-Methallylchloride mit Alkalimetallamiden wurden unter Variation der Alkalimetalle (Li, Na, K), der Lösungsmittel (verschiedene Äther) sowie der Temperatur (65 bis 150°C) untersucht. Es konnten verbesserte Synthesen für reines 1-Methyl-cyclopropen (1) und 3-Methylcyclopropen (3) sowie eine neue Darstellungsmethode für Methylencyclopropan (2) ausgearbeitet werden. Verbindung 2 ist so in hoher Reinheit im kg-Maßstab aus β-Methallylchlorid und Natriumamid in siedendem Dibutyläther zugänglich. – Nebenreaktionen sind C4H6-Oligomerisationen, die Bildung von β-Methallyl- und Isobutenylaminen sowie Ätherspaltungen. Methylenecyclopropane, 1- and 3-Methylcyclopropenes from Methallyl Chlorides and Alkali Amides The reactions of the α-, β-, and γ-methallylchlorides with alkali amides (Li, Na, K) in various solvents (ethers) were investigated in the temperature range 65–150°C. Improved methods for the syntheses of pure 1-methylcyclopropene (1) and 3-methylcyclopropene (3) have been developed. A new method for the preparation of high purity methylenecyclopropane (2) on a kg-scale from β-methallyl chloride and sodium amide in boiling dibutylether has also been developed. – Ether decomposition, C4H6-Oligomerisations and the formation of β-methallyl- and isobutenyl-amines were found to be the principal side reactions in these C4H6-syntheses." @default.
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- W2143278329 date "1973-07-27" @default.
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- W2143278329 title "Methylencyclopropan sowie 1- und 3-Methylcyclopropen aus Methallylchloriden und Alkalimetallamiden" @default.
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- W2143278329 doi "https://doi.org/10.1002/jlac.197319730715" @default.
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