ORGANOALUMINUM COMPOUNDS: I. Methods of Preparation¹

Abstract

36 These figures include in addition to the organoaluminum compounds, any combinations which can be made from inorganic substituents. 4 In the text, "Die Chemie der metall-organischen Verbindungen" by E. Krause and one of the authors, the term "alphyl" is used to denote the aliphatic radicals, and "alkyl" in a broader sense to include both aliphatic and aromatic groups. Conforming to common usage in this country, the term alkyl as used in the present paper refers only to aliphatic radicals. 106 SUMMARY 1. Organoaluminum compounds have been prepared by the reaction of aluminum metal with a series of alkyl halides. These halides are methyl and ethyl chlorides, bromides and iodides, and n-propyl iodide.2. By diverse methods each of the dialkylaluminum halides and alkylaluminum dihalides corresponding to the above alkyl halides has been obtained in pure form.3. The preparation of phenylaluminum dichloride, dibromide, diiodide and p-tolylaluminum diiodide is described.4. Alkylaluminum alkoxides have been prepared by the reaction of aluminum alkyls with aluminum alkoxides.5. Dialkylaluminum halides have been prepared directly by the reaction of alkyl halides with an aluminum-magnesium alloy.6. A new method for preparing aluminum alkyls involving the reaction of alkylaluminum halides with alkali metals is described. Riverside, III.

Organoelement Compounds with AlAl, GaGa, and InIn Bonds

“…Reaction of sterically less demanding dialkylaluminum chlorides. R = Me [22], Et 1221, Pt 1221, sec-buryl. H,CCMe,, H,CSiMe,.…”

The Infrared Spectra of Trimethyl Aluminum, Dimethyl Aluminum Chloride, Methyl Aluminum Dichloride, Methyl Titanium Trichloride, Dimethyl Titanium Dichloride, and Some Deuterium Derivatives

“…The sesquichloride is the initial product obtained in the usual preparation of dimethyl aluminum chloride from the reaction of methyl chloride and aluminum (19). The 487 cin-I band in the infrared is probably an Al-C1 outer stretch and the 440 cm--' band, a bridge mode of the sesquichloride corresponding to either v g or vls in aluminum chloride, which occur a t 438 and 420 cm-l, respectively.…”

Reactions of Trimethylaluminium: Modelling the Chemical Degradation of Synthetic Lubricants

“…[9] This raisesi ssues of reactivity with aluminium components in refrigeration units. Although the reactiono fa lkyl chlorides with aluminium under the influence of an aluminium halidec atalyst is well established, [10] it is known that reaction also proceedsi nt he absenceo fc atalyst. [10b, 11] In this vein,i n our hands the autocatalyticf ormationo ft rialkylaluminium and (catalyst) AlCl 3 from an alkyl chloride-aluminium mixture has been initiatedb yh eat only.…”