Is the carboxylic acid derivative and the substituted carboxylic acid the same concept?
Carboxylic acid derivatives mainly include: 1. Esters 2. Acyl halides such as acetyl chloride: CH3-COCl3. Acids such as acetic anhydride: (CH3CO) 2O4. Amides such as acetamide: CH3CONH2
Substituted carboxylic acids can be thought of as hydrogenated atoms in the carboxylic acid molecules that are replaced by other functional groups. The most common is that the hydrogen atoms are replaced by halogen, hydroxyl, oxygen or amino groups to form a halogenated acid , Hydroxy acids, oxo acids or amino acids such as chloroacetic acid: ClCH2COOH
