Acid Derivatives R-C-X R& 0-R R-C-NH R-CN acid halide anhydride ester amide nitrile Condensed structure:RCOX (RCO)O RCO,R' RCONH, RCN Copyright2010 Pearson Prentice Hall,Inc. All the derivatives can be converted to the carboxylic acid by acidic or basic hydrolysis Esters and amides are commonly found in nature. Chapter 21 2 Chapter 21 2 Acid Derivatives ▪ All the derivatives can be converted to the carboxylic acid by acidic or basic hydrolysis. ▪ Esters and amides are commonly found in nature