Isobutyl aluminum chloride

One of the first published cluster compounds of the heavier group 13 elements was the closo-dodecaaluminate K2[Ali2iBui2] 54 (Figure 2.3-10) [79], which possesses an almost undistorted icosahedron of 12 aluminum atoms with short Al-Al distances (268-270 pm). Up until today, it remained the only homonuclear cluster compound of the elements aluminum to indium which, with respect to structure and cluster electron count, is completely analogous to any boronhydride (see Chapters 1.1.2, 1.1.3, 1.1.5.2, and 2.1.5.6) (in this case doso-[Bi2H12]2 ). Compound 54 was formed in small quantities by the reaction of di(isobutyl)aluminum chloride with potassium and was isolated as dark red crystals (Figure 2.3-10). 

SYNS ALLUMINIO DIISOBUTIL-MONOCLORURO (ITALIAN) BIS(ISOBUTYL)ALUMINUM CHLORIDE CHLOROBIS(2-METHYLPROPYL)ALUMINUiM DIISOBUTYLALUMINUM CHLORIDE DIISOBUTYL-ALUMINUiM MONOCHLORIDE DIISOBUTYL-CHLOROALUMINUM... 

BIS(ISOBUTYL)ALUMINUM CHLORIDE see CGB500 BIS(ISOBUTYL)HYDROALUMINUM see DNI600 BIS(4-ISOCYANATOCYCLOHEXYL)METHANE see lvqM600... 

The reaction of methyl acrylate and cyclopentadiene has been carefully examined by Ketter, Glahsi, and Herrmann with chiral aluminum catalysts prepared from the seventeen chiral diols and /9-hydroxysulfonamides shown in Table 12 [47]. The catalysts were prepared in-situ by reacting the ligand with one equivalent of di-isobutyl-aluminum chloride in dichloromethane at room temperature for 1 h. The standard conditions for the screening of these reactions were 10 mol % catalyst in dichloromethane and 0 to 5 °C, as indicated in Sch. 22. 

Alluminio diisobutil-monocloruro Aluminum, chloro-bis-(2-methylpropyl)- Aluminum, chlorodiisobutyl- Bis-(isobutyl)aluminum chloride Chlorobis 2-methyl-propyl)-aluminum ... 

Polymers containing 18 have been used successfully as metathesis catalysts. For example, a copolymer of with styrene (31 mol percent was treated with isobutyl aluminum chloride and oxygen in hexane and trans-3-heptane. This gave an active metathesis system at 20°C which produced trans-4-octene, trans-3-hexene, and other products (one identified as 4-ethyl-2-octene). Thus, this polymer species appears to behave similar to polystyrene-bound Ti -cyclopentadienyltricarbonylbenzyltungsten as a metathesis... 

With propene, n-butene, and n-pentene, the alkanes formed are propane, n-butane, and n-pentane (plus isopentane), respectively. The production of considerable amounts of light -alkanes is a disadvantage of this reaction route. Furthermore, the yield of the desired alkylate is reduced relative to isobutane and alkene consumption (8). For example, propene alkylation with HF can give more than 15 vol% yield of propane (21). Aluminum chloride-ether complexes also catalyze self-alkylation. However, when acidity is moderated with metal chlorides, the self-alkylation activity is drastically reduced. Intuitively, the formation of isobutylene via proton transfer from an isobutyl cation should be more pronounced at a weaker acidity, but the opposite has been found (92). Other properties besides acidity may contribute to the self-alkylation activity. Earlier publications concerned with zeolites claimed this mechanism to be a source of hydrogen for saturating cracking products or dimerization products (69,93). However, as shown in reaction (10), only the feed alkene will be saturated, and dehydrogenation does not take place. 

Polymerization of isobutyl vinyl ether by diethyl aluminum chloride-oxygen systems [99]. 

Recently, alkylation of a few aromatic aldehydes and acids has also been accomplished successfully. Nitrobenzene is not alkylated under Friedel-Crafts conditions it is converted slowly to 0- and p-chloroaniline in the presence of isobutyl chloride and aluminum chloride. ... 

B-Bromocatecholborane, 47 Bromodimethylborane, 47 B-Chlorocatecholborane, 47 Chlorotriisopropoxytitanium, 213, 226 Copper(II) bromide, 112 Dialkylboryl trifluoromethane-sulfonates, 340 Dichlorobis( 1 -phenylethoxy)-titanium(IV), 12 Dichlorobis(trifluoromethane-sulfonato)titanium(IV), 102 Dichlorodiisopropoxytitanium(I V), 12 Diethylaluminum chloride, 173 Diethylaluminum fluoride, 25 Dimethylaluminum chloride, 5 Ethylaluminum dichloride, 5, 44, 306 Ferric chloride, 133 Ferric chloride-Silica, 134 Isobutyl(2,4,6-tributylphenoxy)-aluminum trifluoromethanesulfonate, 113... 

Diisobutyl(iodomethyl)aluminum, 114 Dimethylaluminum chloride, 5 Ethylaluminum dichloride, 5, 44, 306 Ethylmagnesium bromide-Methyl-aluminum bis(2,4,6-tri-r-butyl-phenoxide), 203 Isobutyl(2,4,6-tributylphenoxy)-aluminum trifluoromethanesulfonate, 113... 

Characterization of the Al-i-Bug—MeCl System by NMR. Al-i-Bu3 is monomeric in hydrocarbon solutions (I). Evidently the bulky isobutyl groups attached to the aluminum prevent dimerization. Since the size of the chlorine in methyl chloride is certainly much smaller than that of an isobutyl group, we expected complex formation between Al-i-Bu3 and methyl chloride to occur. To investigate this possibility we prepared... 

Enones are reduced to saturated ketones by catalytic hydrogenation provided the reaction is stopped following the absorption of 1 mol of hydrogen. " A number of catalysts were found useful for this, including platinum, platinum oxide,Pt/C, " Pd/C, - Rh/C, " tris(triphenylphosphine)rhodium chloride, - nickel-aluminum alloy in 10% aqueous NaOH, and zinc-reduced nickel in an aqueous medium. Mesityl oxide is formed from acetone and reduced in a single pot to methyl isobutyl ketone using a bifunctional catalyst which comprised palladium and zirconium phosphate (Scheme 20). 

The first generation of catalysts based on titanium tetrachloride or different modifications of titanium trichloride and ethyl-, isobutyl-, isoprenyl-, or chloride containing aluminum compounds, Ziegler catalysts, (Table 1) was characterized by low polymerization activity. Kinetic studies and applications of various methods have helped to define the nature of the active center . ... 

ISOBUTYL CHLORIDE (513-36-0) Forms explosive mixture with air (flash point <21°F/-6°C). Violent reaction with strong oxidizers, finely divided aluminum and other chemically active metals, liquid oxygen, potassium, sodium. May form explosive compounds with divalent light metals and metallic azides. Attacks some metals in the presence of moisture. Flow or agitation of substance may generate electrostatic charges due to low conductivity. 

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