Fluorophenylacetic acid is an important intermediate and has an irreplaceable role in the synthesis of pharmaceuticals and electronic materials. For example, m-fluorophenylacetic acid can be used in the preparation of anti-inflammatory drugs. Another example is 2Chemicalbook,4,5-fluorophenylacetic acid is a key intermediate in the preparation of the diabetes treatment drug sitagliptin. As another example, 2,3-difluorophenylacetic acid can be used to prepare difluoronaphthol liquid crystal intermediates.