1.2- Dimethoxyethane, uses

Kunai and Ishikawa et al. have reported that electrolysis of monochloro-silanes in 1,2-dimethoxyethane using a platinum cathode and a mercury anode gives disilanes in high yield (Scheme 40) [84]. Silver can also be used as an excellent anode material in place of mercury. The electrolysis of a mixture of two different monochlorosilanes produces unsymmetrical disilanes. Trisilanes can also be synthesized by the electrolysis of a mixture of monochlorosilanes and dichlorosilanes. They also reported that the use of copper electrodes is effective for the synthesis of disilanes, trisilanes, tetrasilanes, and pentasilanes [85]. 

The use of KN(SiMe3)2 as metalating reagent enabled us to prepare the dimeric potassium derivative [(Cy7Si70i2)2Kg(DME)4] (18) as a crystalline solid, which was structurally characterized by X-ray diffraction (Scheme 7). Here again a box-shaped KgOg polyhedron forms the central structural unit. Four potassium ions are coordinated by DME (1,2-dimethoxyethane) ligands. ... 

Lithoxymethylidynephosphane The simple preparation of l-(l,2-dimethoxyethane-0,0 )lithoxy-alkylidenephosphanes from carboxylic esters and (l,2-dimethoxyethane-0,0 )lithium phosphanide (Eq. 8) motivated us to investigate the analogous reaction with carbonic acid esters very carfully. Whereas with the educt (dme)Li-PH2 several, difficult to separate by-products are formed, lithium bis(trimethylsilyl)phosphanide and diethyl carbonate react at 0 °C in 1,2-dimethoxyethane with elimination of two equivalents of ethoxy trimethylsilane to give the heteroatom substituted phosphaalkyne (dme)2Li-0-CsP in a nearly 80 % yield (Eq. 9) [13]. 

In the robust, very easily accessible cationic complexes [FeCp(arene)][PF6]10 (Cp = h5-cyclopen-tadienyl), the benzyhc protons are more acidic than in the free arene because of the electron-withdrawing character of the 12-electron CpFe+ moiety. For instance, FeCp(C6Me6) Pl6 is more acidic by 15 pKa units (pKa = 28 in DMSO) (DMSO = dimethyl sulfoxide) than in the corresponding free arene (pKa = 43 in DMSO). Asa result, these complexes are much more easily deprotonated than the free arene.11 This key proton-reservoir property led us to synthesize stars and dendrimers in an easy way.12 Indeed, reaction of [FeCp(C6Me6)][PF6], with excess KOH (or i-BuOK) in THF (THF = tetrahydrofuran) or DME (DME = 1,2-dimethoxyethane) and excess methyl iodide, alkyl iodide, allyl bromide, or benzylbromide results in the one-pot hexasubstitution (Scheme 11. la).5,13,14 With allyl bromide (or iodide) in DME, the hexaallylated... 

Smith, G.D., R.L. Jaflfe, and D.Y. Yoon. 1993. A force field for simulations of 1,2-dimethoxyethane and poly(oxyethylene) based upon ab initio electronic-structure calculations on model molecules. JPhys Chem-US 97 12752. 

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