Donor metal sulfonates

Treatment of halides or sulfonates with hydride donors such as tetrabutylammonium borohydride,38 lithium aluminium hydride,39 lithium triethylborohydride46 or sodium borohydride generate deoxy sugar derivatives (Scheme 3.8c).41 When sodium borohydride is employed, a transition metal catalyst (PdCk or NiC-b) may be added. 

Another example published by Whitesides and co-workers is the preparation of diphosphine 8 using sodium taurinate as the sulfonate donor. Diphosphine 8 and its metal complexes appeared to be highly water-soluble, with a concentration in aqueous solution of 0.3 M (pH 7.0, 25 °C) [13]. In the same way, several other diphosphines were synthesized. 

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