General description： 2-Iodophenylacetic acid is a substituted acetic acid that can be prepared from 2-iodobenzyl cyanide. It undergoes palladium-catalyzed reaction with allenes to form 1,3-butadienes. 2-Iodophenylacetic acid also undergoes photolysis in carbon tetrachloride to form the corresponding chloro compound. application： 2-Iodophenylacetic acid may be used in the preparation of:2-iodophenylacetyl chloride；；3,4-dimethoxyphenyl 2-iodophenylacetate；N-{2-[2-(2-iodophenyl)-acetylamino]-ethyl}-2-(3,4- dichlorophenyl)-acetamide。