Triglyme

Tms (trimethylsilyl) = MejSi triglyme triethylene glycol dimethyl ether =... 

Triethylene glycol dimethyl ether (triglyme) [112-49-2] 1.425. Refluxed with, and distd from sodium hydride or LiAlH4. 

NaBH4 is soluble in water, alcohols, pyridine, dioxane, dimethoxyethane, diglyme and triglyme. All these solvents, as well as aqueous tetrahydrofuran and aqueous dimethylformamide, have been used for reductions. The reductions go very slowly in di- and triglyme so these solvents are not suitable for preparative work. In some reductions in dry pyridine and dry dimethyl sulfoxide, reaction only takes place on aqueous work-up. This... 

The pyrolysis of sodium chlorodinuoroacetate is still a widely used, classical method for generating difluorocarbene, especially with enol and allyl acetates [48, 49, 50, 51] (equation 21) A convenient alternative that avoids the hygroscopic salt uses methyl chlorodifluoroacetate with 2 equivalents of a lithium chlonde-hexa-methylphosphoric triamide complex at 75-80 °C in triglyme [52], Yields are excellent with electron-rich olefins but are less satisfactory with moderately nucleophilic alkenes (4-5% yields for 2-bulenes)... 

The cyclization step has been reported to work well in triglyme, mineral oil, paraffin, Dowtherm A , Ph20 or polyphosphoic acid (PPA). PPA has been used to promote the entire reaction in a single process (vide infra). 

Compounds which produce a complex with Li+ ions have been investigated. The compounds examined were N,N,N, N tetramethylethylenediamine (TMEDA), eth-ylenediamine, crown ethers, cryptand [211], diglyme, triglyme, tetraglyme, eth-ylenediamine tetraacetic acid (EDTA) and EDTA-Li+ (n=l, 2, 3) complexes [59]. The cycling efficiency was improved by adding TMEDA, but the other additives did not show distinct effects. 

O,O,(9-Triethyl phosphorothioate, t298 Trifluoromethylbenzene, t311 Triglyme, b211... 

Based on the triglyme theozyme, additional catalysts were designed.1181 Of the potential catalysts examined, 6 was predicted to provide the best differential stabilization of the reactants and transition state. This molecule contains a polyether substructure as well as an additional hydrogen bond donor (the carbamate NH) which may further promote departure of the aryloxide leaving group. In addition, this catalyst is preorganized such that its polyether array is predisposed towards efficient... 

The reaction of toluene solutions of indium trichloride and tris(trimethylsilyl)arsine resulted in the formation of a very fine dark-brown powder subsequently annealed up to 400°C to drive to completion the elimination of trimethyl-silyl-chloride. Nanocrystalline InAs was obtained. Similar reactions with InBr3 and Inl3 and P compounds have been discussed. Previously a similar reaction was described by Uchida et al. (1993) (reaction of indium acetylacetonate with tris(trimethylsilyl)arsine in refluxing triglyme). Subsequently the reaction with InCl3 was used by Guzelian et al. (1996) in the preparation of nano-crystal quantum dots. They compared different preparation methods and techniques useful to isolate specific size distributions. 

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