Nomenclature of Esters (CH)2CH一O CH,-0-C-CH,- IUPAC name: 1-methylethyl methanoate phenyl benzoate methyl 2-phenylethanoate common name: isopropyl formate phenyl benzoate methyl phenylacetate ▣ Esters are named as alkyl carboxylates. The first word is derived from the alkyl group of the alcohol,and the second word from the carboxylate group of the carboxylic acid. Chapter 21 Chapter 21 4 Nomenclature of Esters ▪ Esters are named as alkyl carboxylates. ▪ The first word is derived from the alkyl group of the alcohol, and the second word from the carboxylate group of the carboxylic acid