Lithium cyanohydridoborate

Lithium borohydride, 62 Lithium f-butoxide, 69 Lithium cyanohydridoborate, 92 Lithium diisopropylamide, 477 Lithium reductive deacetoxylation, 56 Lithium reduction of 17a-ethynyl-19-nortestosterone, 55... 

Lithium cyanohydridoborate, LiBH3CN. Mol. wt. 45.90. Supplier Alfa Inorganics. 

Reduction. An early report2 stated that aldehydes and a-hydroxy ketones are reduced by this reagent but that ketones, nitro compounds, carboxylic acids, and esters are not reduced. Borch and Durst,3 however, found that some ketones are reduced, but more slowly than with sodium borohydride. One advantage over the latter reagent is that lithium cyanohydridoborate is stable in acid up to pH 3 and hence can be used for reduction of groups sensitive to high pH (e.g., thiamine). 

---