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Applications of Liquid-Chromatography Tandem Mass Spectrometry in Natural Products Research: Tropane Alkaloids as a Case Study
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Structure elucidation of an unprecedented alkaloid and a new limonoid from Xylocarpus granatum

Jianxin Cui1, Jie Ouyang, Zhiwei Deng

  • 1State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing, PR China.

Magnetic Resonance in Chemistry : MRC
|July 11, 2008
PubMed

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Aldehydes and Ketones with HCN: Cyanohydrin Formation Overview01:32

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Cyanohydrins are compounds that contain –CN and –OH groups on the same carbon atom. They are formed by the nucleophilic addition of the cyanide ions to the carbonyl group. Cyanide ions are highly basic and nucleophilic and can be generated from HCN under aqueous conditions. However, since HCN is a weak acid, the number of cyanide ions generated is very small. Hence, a small amount of base or KCN/NaCN is added to HCN to increase the concentration of the cyanide ions in the reaction mixture.