Chloro-3-methyl-butane

Chloro-2-methylbutane Butane, 2-chloro-2-methyl- (8,9) (594-36-5) Titanium tetrachloride Titanium chloride (8,9) (7550-45-0)... 

Butadiene/styrene polymer 1,3-Butadiene/styrene polymer Butadiene/styrene resin 1,3-Butadiene/styrene resin Butadiene/styrene rubber. See Styrene/butadiene polymer Butadiene. See Diacetyl Butal Butaldehyde Butalyde. Seen-Butyraldehyde Butamben. See Butyl PABA Butanal n-Butanal. See n-Butyraldehyde Butanal, 2-ethyl-. See 2-Ethylbutyraldehyde 1-Butanal, 3-methyl-. See Isovaleraldehyde Butanal, 2-methyl-. See 2-Methylbutyraldehyde Butanal, 3-(3-(1-methylethyl) phenyl)-. See Isopropylphenylbutanal Butanal oxime. See m-Butyraldehyde oxime Butanamide, 2-bromo-3,3-dimethyl-N-(1-methyl-1-phenylethyl)-. See Bromobutide Butanamide, 2-(4-chloro-2-nitrophenyl) azo)-N-(2,3-dihydro-2-oxo-1H-benzimidazo-5-yl)-3-oxo-. See Pigment orange 36 Butanamide, 2-((4-chloro-2-nitrophenyl) azo)-n-(2-methoxyphenyl)-3-oxo-. See Pigment yellow 73... 

CH2 CH C CH. Colourless gas with a sweet odour b.p. 5°C. Manufactured by the controlled low-temperature telomerization of ethyne in the presence of an aqueous solution of CuCI and NH Cl. Reduced by hydrogen to butadiene and, finally, butane. Reacts with water in the presence of HgSO to give methyl vinyl ketone. Forms salts. Forms 2-chloro-butadiene (chloroprene) with hydrochloric acid and certain metallic chlorides. 

If every collision of a chlorine atom with a butane molecule resulted in hydrogen abstraction, the n-butyl/5ec-butyl radical ratio and, therefore, the 1-chloro/2-chlorobutane ratio, would be given by the relative numbers of hydrogens in the two equivalent methyl groups of CH3CH2CH2CH3 (six) compared with those in the two equivalent methylene groups (four). The product distribution expected on a statistical basis would be 60% 1-chloro-butane and 40% 2-chlorobutane. The experimentally observed product distribution, however, is 28% 1-chlorobutane and 72% 2-chlorobutane. 5ec-Butyl radical is therefore formed in greater anounts, and n-butyl radical in lesser anounts, than expected statistically. 

A mixture of 7.3 parts l-chloro-4,4-di-(4-fluorophenyl)-butane, 5.1 parts l-phenyl-4-oxo-l,3,8-triaza-spiro(4,5)-decane, 4 parts sodium carbonate, a few crystals of potassium iodide in 200 parts 4-methyl-2-pentanone is stirred and refluxed for 60 hours. After cooling the reaction mixture is treated with water. The organic layer is separated, dried, filtered and evaporated. The solid residue is recrystallized from 80 parts 4-methyl-2-pentanone, yielding l-phenyl-4-oxo-8-[4,4-di-(4-fluorophenyl)-] butyl-1,3,8-triaza-spiro(4,5)decane, melting point 187.5° to 190°C. 

Acetamido-4-amino-6-chloro-s-triazine, see Atrazine Acetanilide, see Aniline, Chlorobenzene, Vinclozolin Acetic acid, see Acenaphthene, Acetaldehyde, Acetic anhydride. Acetone, Acetonitrile, Acrolein, Acrylonitrile, Aldicarb. Amyl acetate, sec-Amyl acetate, Bis(2-ethylhexyl) phthalate. Butyl acetate, sec-Butyl acetate, ferf-Butyl acetate, 2-Chlorophenol, Diazinon. 2,4-Dimethylphenol, 2,4-Dinitrophenol, 2,4-Dinitrotoluene, 1,4-Dioxane, 1,2-Diphenylhydrazine, Esfenvalerate. Ethyl acetate, Flucvthrinate. Formic acid, sec-Hexyl acetate. Isopropyl acetate, Isoamyl acetate. Isobutyl acetate, Methanol. Methyl acetate. 2-Methvl-2-butene. Methyl ferf-butvl ether. Methyl cellosolve acetate. 2-Methvlphenol. Methomvl. 4-Nitrophenol, Pentachlorophenol, Phenol. Propyl acetate. 1,1,1-Trichloroethane, Vinyl acetate. Vinyl chloride Acetoacetic acid, see Mevinphos Acetone, see Acrolein. Acrylonitrile. Atrazine. Butane. 

N-Methylimidazole Imidazole, 1-methyl- (8) IH-lmidazole, 1-methyl (9) (616-47-7) 1-Chlorobutane Butane, 1-chloro- (8,9) (109-69-3)... 

Dimethylpropane. b) CHjCHjCHjCH CH, gives 2-chloropentane and 3-chloropentane. 2-Methyl-butane gives 2-chloro-3-methylbutane. (c) 2-Methylbutane gives 2-chloro-2-methylbutane. 

Butane 2-Bromo-4-chloro-2-methyl-1.1.1.4.4-pcntafluoro- ElOb, 50 (4.4-CI, -> 4,4-F,)... 

Butane 4-Chloro-3-methyl-l,l,1.2,2-pentafluoro- ElOb, 352 (En + Cl-A-Cl/SbFs/HF)... 

Butane l-Chloro-l-fluoro-3-methyl-2-oxo- EI0b2. 51 (F.duct)... 

In a multistep synthesis, the overall percent yield is the product of the fractional yields in each step times 100 and decreases rapidly with the number of steps. For this reason, a low-yield step along the way can mean practical failure for the overall sequence. Usually, the best sequence will be the one with the fewest steps. Exceptions arise when the desired product is obtained as a component of a mixture that is difficult to separate. For example, one could prepare 2-chloro-2-methylbutane in one step by direct chlorination of 2-methyl-butane (Section 4-5A). But because the desired product is very difficult to separate from the other, isomeric monochlorinated products, it is desirable to use a longer sequence that may give a lower yield but avoids the separation problem. Similar separation problems would be encountered in a synthesis that gives a mixture of stereoisomers when only one isomer is desired. Again, the optimal synthesis may involve a longer sequence that would be stereospecific for the desired isomer. 

An interesting work on neighboring group participation in the gas phase is the pyrolysis kinetics of l-chloro-4-(methylthio)butane which forms quantitatively tetrahydrothio-phene and methyl chloride179. In addition to the formation of the cyclic product, the rate of decomposition was also rather high as shown in Table 29. 

The submitters purchased 2-chloro-2-methyl butane from Eastman Kodak Company. The checkers prepared the halide as follows. A separatory funnel was charged with 21.5 mL (0.2 mol) of 2-methyl-2-butanol and 100 mt of coned hydrochloric acid. The mixture was shaken vigorously with periodic venting for 10 min. The layers were separated and the 2-chloro-2-methylbutane layer (upper) was washed several times with equal volumes of cold water. The product was dried over calcium chloride and distilled, bp 85°C. 

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