Tetra-alkylborons

Other interesting electrolytic systems have been developed based on electrolysis of triethylsulfonium bromide in acetonitrile with a lead cathode H8,ii9)j and electrolyses of aqueous solutions of sodium tetra-alkylboron compounds 245,337) Altogether, the breadth and depth of the research effort that has been devoted to the various electrolytic methods for the synthesis of tetraalkyllead compounds is remarkable. However, the successful development of a commercial process has not been accomplished, and indeed, it is probably less likely today than it was several years ago. 

The shifts for several lithium tetra-alkylboron salts were also given by these same authors and occur in the range of +16 to +20 p.p.m. to high field of diethyl ether—boron trifluoride. In the presence of excess of trialkylboron with the lithium alkyl, two distinct signals are observed, indicating there is no exchange between the species. 

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