Lithium cyanide LiCN

Lithium cyanide LiCN Highly toxic toxic Produces toxic HCN... 

Vinylic copper reagents react with CICN to give vinyl cyanides, though BrCN and ICN give the vinylic halide instead." Vinylic cyanides have also been prepared by the reaction between vinylic lithium compounds and phenyl cyanate PhOCN." Alkyl cyanides (RCN) have been prepared, in varying yields, by treatment of sodium trialkylcyanoborates with NaCN and lead tetraacetate." Vinyl bromides reacted with KCN, in the presence of a nickel complex and zinc metal to give the vinyl nitrile. Vinyl triflates react with LiCN, in the presence of a palladium catalyst, to give the vinyl nitrile." ... 

N NMR spectroscopy has been applied to cyanocuprates BuCu(C N) Li and Bu2Cu Li LiCN, both reagents derived from labeled n-butyllithium and copper cyanide. In this study, Li and N NMR spectra were obtained in THF- /8 and Et20- /lo at —80 °C for cuprates with a lithium copper ratio of... 

Since trialkylsilyl cyanides are highly toxic, preparation of these compounds must he performed in a well ventilated food. The preparation of anhydrous LiCN is also conveniently performed by the treatment of acetone cyanohydrin with lithium hydride [59]. 

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