Dimethoxy-ethane

It is quite feasible to run the reaction at a bath temperature of 90-95° by adding all reagents to the flask initially a quantitative evolution of carbon dioxide occurs over a period of about 18 hours. The reaction can also be carried out in refluxing 1,2-dimethoxy-ethane (Arapahoe Chemicals, Inc.) over a period of about 50 hours (yield 40-55%), or in triethylene glycol dimethyl ether (Ansul Chemical Company) at a bath temperature of 160° over a period of 2 hours (yield 64%). 

IR spectra have been reported for WSCI4 13, 57), and WSBr4 and WSCI3 (57). WSCI4 was also the subject of a mass-spectrometric study of the vaporization 359). The reaction of WSeCU with 1,2-dimethoxy-ethane has been investigated 56). 

Dimethyl ether Ethyl methyl ether Diehyl ether Dipropyl ether Diisopropyl ether Dibutyl ether 1,2-Dimethoxy ethane... 

In an Erlenmeyer flask capped with a rubber septum a mixture of naphthalene, 1,2-dimethoxy-ethane and enough sodium to yield an 0.5-1.0 m solution of anion radical is stirred with a glass-covered stirring bar for 1-1.5 hours, by which time the anion radical will have formed and scavenged the oxygen inside the flask. A solution of one-sixth to one-third of an equivalent of the sulfonamide in dimethoxyethane is injected by syringe and the mixture is stirred at room temperature for approximately 1 hour. Quenching with water produces amines in 68-94% isolated yields. 

Oxalsaure-l-chlorid-2-ethylester-l-hydroximid addiert sich an Dialkylcyanamide beim Erhit-zen auf 100 in 1,2-Dimethoxy-ethan und mit Triethylamin als Base zu 5-Dialkylamino-3-ethoxy-carbonyl-1,2,4-oxadiazolen350 z.B. ... 

Bei der Reaktion von Kohlensaure-acylimid-amid-chloriden arbeitet man mit Hydroxylamin-Hydrochlorid in einem aprotischen Losungsmittel (z. B. 1,2-Dimethoxy-ethan) und Triethyl-amin als Hilfsbase174 z.B. ... 

Als Losungsmitlel kann auch Methanol oder eine Benzol/Methanol-Mischung eingesetzt werden. Aceto-nitril, Tetrahydrofuran und 1,2-Dimethoxy-ethan sind dagegen ungeeignet. 

Die Reaktion von 2-Methyl-2-nitro-propan mit Natrium in 1,2-Dimethoxy-ethan, Zugabe des Reaktionsgemisches zu Natriumsulfid und Schwefel in Dimethylformamid und Be-lichtung mit einer Wolframdraht-Lampe fuhrt nach Aufarbeitung zu Di-tert.-butylamin (54% isoliert) und Tri-terl.-bulyl-hydroxylamin (20%). ... 

A review is given on the kinetics of the anionic polymerization of methyl methacrylate and tert.-butyl methacrylate in tetrahydrofuran and 1,2-dimethoxy-ethane, including major results of the author s laboratory. The Arrhenius plots for the propagation reaction+are linear and independent of the counterion (i.e. Na, Cs). The results are discussed assuming the active centre to be a contact ion pair with an enolate-like anion the counterion thus exhibiting little influence on the reactivity of the carbanion. 

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