cyanohydrin - определение. Что такое cyanohydrin
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Что (кто) такое cyanohydrin - определение

CLASS OF CHEMICAL COMPOUNDS; GEMINAL ALCOHOL-CYANIDES
Cyanohydrins; Hydroxynitrile
  • [[Amygdalin]] is one of several naturally occurring cyanogenic glycosides.
  • Different reactions for the preparation of cyanohydrin

cyanohydrin         
[?s???n?(?)'h??dr?n]
¦ noun Chemistry an organic compound containing a carbon atom linked to both cyanide and hydroxyl groups.
Cyanohydrin reaction         
ADDITION REACTION OF CARBONYL COMPOUNDS AND CYANIDE
Urech cyanohydrin method
A cyanohydrin reaction is an organic chemical reaction in which an aldehyde or ketone reacts with a cyanide anion or a nitrile to form a cyanohydrin. This nucleophilic addition is a reversible reaction but with aliphatic carbonyl compounds equilibrium is in favor of the reaction products.
Cyanohydrin beta-glucosyltransferase         
In enzymology, a cyanohydrin beta-glucosyltransferase () is an enzyme that catalyzes the chemical reaction

Википедия

Cyanohydrin

In organic chemistry, a cyanohydrin or hydroxynitrile is a functional group found in organic compounds in which a cyano and a hydroxy group are attached to the same carbon atom. The general formula is R2C(OH)CN, where R is H, alkyl, or aryl. Cyanohydrins are industrially important precursors to carboxylic acids and some amino acids. Cyanohydrins can be formed by the cyanohydrin reaction, which involves treating a ketone or an aldehyde with hydrogen cyanide (HCN) in the presence of excess amounts of sodium cyanide (NaCN) as a catalyst:

RR’C=O + HCN → RR’C(OH)CN

In this reaction, the nucleophilic CN ion attacks the electrophilic carbonyl carbon in the ketone, followed by protonation by HCN, thereby regenerating the cyanide anion. Cyanohydrins are also prepared by displacement of sulfite by cyanide salts:

Cyanohydrins are intermediates in the Strecker amino acid synthesis. In aqueous acid, they are hydrolyzed to the α-hydroxy acid.