Carbonyl
ketones and aldehydes
sugars containing aldehydes as the functional group are termed as aldoses eg.glucose,sucrose sugars containing ketones as the functional group are termed as ketoses eg.fructose
Ketones and aldehydes are both organic compounds that contain a carbonyl functional group (C=O). The main difference between them is in the placement of the carbonyl group: ketones have the carbonyl group located in the middle of the carbon chain, while aldehydes have it at the end of the chain. Both ketones and aldehydes are important in various chemical reactions and serve as building blocks for more complex molecules.
The functional group that distinguishes aldehydes from most other classes of compounds is the carbonyl group (-C=O) with a hydrogen atom bonded to the carbonyl carbon. This unique structure gives aldehydes distinct chemical properties, such as their characteristic reactivity towards oxidation and reduction reactions.
An aldehyde is a functional group that is a structural isomer of a ketone. Aldehydes differ from ketones by having a carbonyl group at the end of a carbon chain, while ketones have the carbonyl group located within the chain.
Typically aromatic groups attached to functional groups increase the reaction over that of an aliphatic groups. Aromatic aldehydes (e.g. benzaldehyde, C6H5.CHO), are also known which undergo a number of chemical reaction which do nor occur for aliphatic aldehydes and which are unique to aromatic aldehydes.
The key difference between aldehydes and ketones is the location of the carbonyl group. In aldehydes, the carbonyl group is located at the end of the carbon chain, while in ketones, it is located within the carbon chain. This difference affects their chemical properties and reactivity.
Aldehydes and ketones contain the carbonyl group C=O.
Aldehydes and ketones both contain a carbonyl group, which is a carbon atom double-bonded to an oxygen atom. In aldehydes, the carbonyl group is located at the end of a carbon chain, while in ketones, it is located within the carbon chain.
Chromic acid (H2CrO4) reacts with aldehydes to form carboxylic acids through oxidation. This reaction involves the transfer of oxygen to the aldehyde carbon, converting it to a carboxylic acid functional group.
The general formula for aldehydes is RCHO (where R is a hydrocarbon group), and the general formula for ketones is R2CO (where R is a hydrocarbon group).
The main functional group present in an apple fruit is the hydroxyl group (-OH), which can be found in compounds such as sugars (e.g. glucose, fructose) and organic acids (e.g. malic acid). Additionally, apples may also contain other functional groups such as esters (e.g. ethyl acetate) and aldehydes (e.g. hexanal), contributing to their flavor and aroma.