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In the laboratory, this liquid serves as a source of HCN, which is inconveniently volatile. [4] Thus, acetone cyanohydrin can be used for the preparation of other cyanohydrins, for the transformation of HCN to Michael acceptors, and for the formylation of arenes. Treatment of this cyanohydrin with lithium hydride affords anhydrous lithium cyanide:
(CH 3) 3 SiCN + H 2 O → (CH 3) 3 SiOH + HCN. In its principal application, it adds across carbon-oxygen double bonds, for example in an aldehyde, to form a new carbon-carbon bond: [2] RCH=O + (CH 3) 3 SiC≡N → N≡C– CHR–O Si(CH 3) 3. The product is an O-silylated cyanohydrin. One use of this reagent is to convert pyridine-N-oxides ...
Glycolonitrile, also called hydroxyacetonitrile or formaldehyde cyanohydrin, is the organic compound with the formula HOCH 2 CN. It is the simplest cyanohydrin and it is derived from formaldehyde . [ 3 ]
It is used as a surrogate in place of HCN, as illustrated by its use as a precursor to lithium cyanide: [8] (CH 3) 2 C(OH)CN + LiH → (CH 3) 2 CO + LiCN + H 2. In transhydrocyanation, an equivalent of HCN is transferred from acetone cyanohydrin to another acceptor, with acetone as byproduct. The transfer is an equilibrium process, initiated by ...
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In a new report on the massacre, the U.N. Office of the High Commissioner for Human Rights said at least 134 men and 73 women, most of them elderly residents accused of witchcraft, were killed in ...
Here are some of the best photos and video from the first Saturday in May. On display was a Kentucky tradition, reflecting the grand spectacle the Kentucky Derby has become since it was first ran ...
In organic chemistry, a cyanohydrin reaction is an organic reaction in which an aldehyde (−CH=O) or ketone (>C=O) reacts with a cyanide anion ...