Preparation of Organoaluminium Compounds

However, a slight modification of this procedure showed that trimethyl-aluminium was available in 86% yield and 95% purity [81]. Methylalu-minium sesquiiodide was formed by direct reaction of aluminium powder with methyl iodide in ethanol. Subsequent treatment with triethylaluminium gave the triethyl derivative. 

Brown has shown that ultrasound can be used to accelerate the classic magnesium mediated reaction, allowing access to a number of organo-boranes which are not available by hydroboration [76]. 

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