'Summary: hydroxycarbonyl compounds'

'\nEndioly argon acidic and alkalescent medium in salt get up, called reduktonatami. Reduktonaty atomic number 18 strong cut back agents, however in contrast to just-hydroxy ketones ketones having bring down properties, react with Fehlings reagent. In doing so, they ar oxidized to 1,2-dicarbonyl compounds.\nHallmark of 1,4 - and 1,5-hydroxycarbonyl compounds is oxo-cyclo tautomerism (ring-chain tautomerism), tip to the formation of cyclic hemiacetals, the hydroxyl root can imbibe both axial and equatorial position.\nThe chemical substance properties of 1,3-dicarbonyl compounds are more often than not determined keto-enol tautomerism. 1,3-dicarbonyl compounds are more sinewy C-H acids than simple aldehydes and ketones. For example, acetylacetone (pKa = 9,0) and alcohol- meltable in alkalis is reacted with sodium hydrogen evolution. With dim metal salts of 1,3-dicarbonyl compounds to form very abiding chelate complexes soluble in organic solvents and distilled without decomposition at normal pressure.'