Dimethyl pentane

Dibrom-3-oxo-2,4-dimethyl-pentan wird kathodisch (an Quecksilber in aproti-schen Solventien) zu 3-Oxo-2,4-dimethyl-penten-(l) reduziert3. Das intermediar gebil-dete Cyclopropanon-Derivat kann mit Nukleophilen (z. B. Alkoholen, Essigsaure) abge-fangen werden (s. S. 669)3,4. 

With platinum and palladium supported on acidic alumina, cyclopentanes are important intermediates of aromatization (44, 123-124). For example, n-heptane gave about 2-3 times more aromatic product than 2,4-dimethyl-pentane, whereas the formation of C5 cyclic products was about the same from both alkanes. Alkylcyclopentanes aromatized at a reasonable rate (123a). 

Nitroso-3-nitro-2,4-dimethyl pentane,. [(H3C)2CH]2C(N0).N02 mw 174.20, N 16.08% non-freezing blue oil, bp — dec at 54° was prepd by treating diisopropylketoxime in ether soln with N02 under cooling with exclusion of light... 

A chromium(IV) ester was synthesized with 2,4-dimethyl-pentane-2,4-diol to examined its ability to cause DNA double strand breaks (Luo et al. 1996). Calf thymus DNA was reacted with the chromium(IV) complex (1.3 mg/mL) in the presence of 2 mM hydrogen peroxide for 6 days at pH 6.8. The results showed that the complex in the presence of hydrogen peroxide significantly damaged DNA by causing double strand breaks. Neither chromium(IV) or hydrogen peroxide alone damaged DNA. 

A container was charged with a solution of Vazo 52 catalyst and 2,2 -azobis(2,4-dimethyl pentane nitrile) (4.5 g) dissolved in acetone (600 g) a second container was charged with methyl methacrylate (540 g) and 2-hydroxy ethyl methacrylate (180 g). The first and second containers were uniformly fed into a reactor for 330 and 240 minutes, respectively, and then refluxed for 1 hour. After standard workup the product was isolated in 100% yield, having aMn of 30,308 daltons, Mw of93,195 daltons, and a PDI of 3.07. 

Reduction of a,a -dibromo ketones. Reduction of 2,4-dibromo-2,4-dimethyl-pentane-3-one (1) with ultrasonically dispersed mercury in the presence of a ketone such as acetone leads to a 4-methylene-l,3-dioxolane (2) in about 50% yield. A similar reaction has been observed in the reduction of dibromo ketones with zinc in dimethylformamide (5, 221). 2-Oxyallyl cations such as a have been invoked as intermediates in reductions of dihalo ketones with various metals. 

Chemical Name diisopropyl ether, isopropyl ether, 2-isopropoxypropane, 2,2-oxybispropane, 3-oxa-2,4-dimethyl-pentane... 

Sullivan, K.F., Atlas, E.L., Giam, C.S. (1982) Adsorption of phthalic acid esters from sea water. Environ. Sci. Technol. 16, 428 32. Swamy, P.A., Van Winkle, M. (1965) Vapor-liquid equilibria at 760 mm. of mercury for the system vinyl actate-2,4-dimethyl pentane. J. Chem. Eng. Data 514-515. 

C7H7CI p-chlorotoluene 106-43-4 8.530E+09 68.990 12118 C7H16 2,4-dimethyl pentane 108-08-7 1.097E+10 78.470... 

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