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Aldehyde and Ketone Reactions
Transcript of Aldehyde and Ketone Reactions
R H R Aldehyde R2C=O + 2 R'OH R2C(OR')2 + H2O (an acetal) Ketones react with alcohol to form an acetal and water.
An acetal is a molecule with 2 single bonded Oxygens such as H2O OH C R R H Secondary Alcohol Oxidized O C R R Ketone Classes of ketones
Ketones are classified into diketones which is two ketones.
Unsaturated ketones are another class of ketones containing alkene and alkyne units.
The most widely used member of this class of compounds is methyl vinyl ketone, CH3C(O)CH=CH2.
Many ketones are Cyclic Ketones. The simplest class has the formula (CH2)nCO. Cyclohexanone, a symmetrical cyclic ketone, is an important intermediate in the production of nylon.
Main article: Enol
Keto-enol tautomerism is another ketone class.Ketones that have at least one alpha-hydrogen, undergo keto-enol tautomerization; the tautomer is an enol. Tautomerization may be catalyzed by both acids and bases. Usually, the keto form is more stable than the enol. This equilibrium allows ketones to be prepared via the hydration of alkynes. Oxidized Aldehydes: Ketones are often engaged in organic reactions. Ketones In organic chemistry, a ketone is a compound with the structure RC(=O)R, where R and R can be a variety of atoms and groups of atoms. It features a carbonyl group (C=O) bonded to two other carbon atoms.Acetone is the simplest example of a ketone. Ketones differ from aldehydes in that the carbonyl is placed between two carbons rather than at the end of a carbon skeleton. They are also distinct from other functional groups, such as carboxylic acids, esters and amides, which have a carbonyl group bonded to a hetero atom. Aldehydes and ketones are organic compounds which incorporate a carbonyl functional group, C=O. The carbon atom of this group has two remaining bonds that may be occupied by hydrogen or alkyl or aryl substituents. If at least one of these substituents is hydrogen, the compound is an aldehyde. If neither is hydrogen, the compound is a ketone. This functional group, with the structure R-CHO, consists of a carbonyl centre bonded to hydrogen and an R group. Aldehydes are common in organic chemistry. Many fragrances are aldehydes.
By: Devonne Moore