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Please login to access the full content or check if you have access via5.3.25.6.1 Variation 1: From Metal Tetraalkylborates or Tetraalkylaluminates
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Eagle, P. A. C., Science of Synthesis, (2003) 5, 784.
Symmetrical tetraalkylplumbanes can be obtained by the electrolysis of sodium tetraalkylborates in aqueous solution[62] or sodium tetraalkylaluminates or alkylalkoxyaluminates in ethereal solvents[63] at a lead anode. A mercury pool is required as the counter electrode at which metallic byproducts redissolve. For example, tetramethylplumbane is obtained in an estimated 90% yield, by the electrolysis of sodium tetramethylaluminate in tetrahydrofuran at a lead anode in a cylindrical cell (Figure 1). A potential difference of 5.5 V is maintained between the anode and the mercury electrode giving a cell current of 3.8 A (Scheme 8).[63] The requirement for a mercury cathode in this approach has obvious environmental disadvantages and an alternative route to tetraethylplumbane involves the electrolysis of potassium dichloro(diethyl)aluminate and ethyl chloride in a sealed cell using a platinum counter electrode.[64] Here the alkyl halide is believed to react with aluminum metal produced at the anode, preventing its deposition within the cell.
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References
[62] | Meeeeee, M.; Meeeeee, M.-M., Mee. Meee., (8888) 888, 8. |
[63] | Meeeeee, M., MM 888888, (8888); Meee. Meeee., (8888) 88, 8888. |
[64] | Meeeeee, M. M., MM 8888888, (8888); Meee. Meeee., (8888) 88, 88888. |
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