Methyl tert-butyl

O —Si-enol + R-Cl) (WJts-4-tert.-Butyl-2-methyl-1-oxo-E13/2, 1380 (aus dem Hydrazon) 6-tert.-Butyl-2-methyi-l-oxo- E19c, 335 (O —Si-enol + R —Cl) (Butyloxy-methylen)- E15/1, 198 (3-NO — 2-oxo — 1,3-oxazolidin/ R-ONa)... 

C11H15N02 N-methylpropham 3295-92-9 489.15 42.843 2 22404 C11H160 4-tert-butyl-2-methyl phenol 98-27-1 510-15 44.037 1,2... 

Acid catalyzed addition of alcohols to alkenes is sometimes used Indeed before Its use as a gasoline additive was curtailed billions of pounds of tert butyl methyl ether (MTBE) was prepared by the reaction... 

Small amounts of tert butyl methyl ether increase the octane rating of gasoline Before environmental concerns placed limits on its use the demand for MTBE exceeded the supply... 

Commercial appHcation of this type of reaction is used to produce 2,2 -methylenebis(6-/ f2 -butyl-4-methylphenol) (R = tert — butyl = methyl R = H) and 2,2 -ethylidenebis(4,6-di-/ /f-butylphenol) R = R = tert — butyl R = CH ). 

Likewise, synthetic 2//-azepines isomerize to 3//-azepines in refluxing chloroform (2-3 h) or in tert-butyl methyl ether at room temperature.291 The isomers can be readily separated by chromatography on silica gel, as the more basic 2//-azepines30 have lower Rf values. In contrast, 7-butyl-2//-azepin-2-acetic acid (11), obtained by heating the tert-butyl ester 10 with iodotrimethylsilane, is stabilized by intramolecular hydrogen bonding and shows no tendency to rearrange to the 3//-isomer.291... 

Mobile phase Toluene — tert-butyl methyl ether — acetic acid (10%)... 

AA = amonium acetate. ACN = acetonitrile. BHT = butylated hydroxytoluene. CHjClj = dichloromethane. HEX = hexane. IS = internal standard. MeOH = methanol. RT = room temperature. TEA = triethylamine. TBME = tert-butyl methyl ether. THE = tetrahydrofuran. 

A biphasic solvent system composed of tert-butyl methyl ether, -butanol, acetonitrile, and water (2 2 1 5) acidified with triflnoroacetic acid has been applied to fractionate anthocyanins. The npper (organic) phase acts as the stationary phase and the lower (aqneons) as the mobile phase. HSCCC has been applied to obtain several anthocyanin fractions from wine, red cabbage, black cnrrants, chokeber-ries, " bilberries (Vaccinium myrtillus) acylated anthocyanins, and also isolate individnal anthocyanins from wine. ... 

Attention has been given to possible adverse effects of incorporating tert-butyl methyl ether into antomobile fuels. tert-Butyl formate is an established product of photolysis, and it has been shown that photolysis in the presence of NO can produce the relatively stable tert-butoxyformyl peroxynitrate. This has a stability comparable to that of peroxy-acetyl nitrate, and may therefore increase the potential for disseminating NO (Kirchner et al. 1997). 

Fig.6 The molecular structure of cis-Mo2(NMe2)2[02P(O Bu)2]4 generated from crystallographic data, with all hydrogen atoms and tert-butyl methyl groups omitted for clarity...

Reaction protocol 0.9 M 1-pentene, 0.18 M hydrogen peroxide (30%) and 0.2 M tert.-butyl methyl ether were dissolved in methanol [30], This mixture was passed over the catalyst at a rate of 30-120 pi h . Reaction was carried out at room temperature. The product mixture was collected in an ice bath. 

If, on the other hand, unsymmetrically substituted carbonyl compounds such as monosubstituted benzophenones (X = OCH3, CH3, Cl), tert-butyl methyl ketone, acetophenone, acetaldehyde, or benzaldehyde are used for trapping 39a, diastere-omeric mixtures are formed in each case they could all be resolved except for the products obtained with p-methoxybenzophenone and acetophenone 33>. An X-ray structure analysis has been performed for the E-isomer 57g 36) which, in conjunction with H-NMR studies, permitted structural assignment in cases 56 and 57e, g and h35>. Additional chemical evidence for the structure of the six-membered heterocycles is provided by the thermolysis of 56 a considered in another context (see Sect. 3.1). In general the reaction 39a- 56 or 57 is accompanied by formation of phosphene dimers, presumably via [4 + 4]- and via [4 + 2]-cycloaddition 35). 

Dichloromethane, petroleum ether, diethyl ether, tert-butyl methyl ether, ethyl acetate... 

The mixture was transferred into a separating funnel. The aqueous phase was separated and extracted with tert-butyl methyl ether (2 x 20 mL). The brown combined organic layers were filtered through a pad of Celite , and then washed with water (2 x 40 mL) and with brine (2 x 40 mL), dried over sodium sulfate, filtered and concentrated under reduced pressure, giving a brown oil (700 mg). 

Methyl tert-butyl ether Ether, tert-butyl methyl (8) Propane, 2-methoxy-2-methyl- (9) (1634-04-4)... 

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