Esters: RCO2R a Systematic names for esters are derived by first giving the name of the alkyl group attached to oxygen and then identifying the carboxylic acid. In so doing the -ic acid ending is replaced by -ateOrganic Chemistry Organic Chemistry Xiamen Xiamen University University Esters: RCO 2 R ’ „ Systematic names for esters are derived by first giving the name of the alkyl group attached to oxygen and then identifying the carboxylic acid. In so doing, the –ic acid ending is replaced by –ate