Fluorophenylhydrazine hydrochloride was synthesized from 4-fluoroaniline by diazotization and thenreduction with sodium bisulfite in an overall yield of 92%.

• 对氟苯胺经重氮化后用亚硫酸氢钠还原制得对氟苯肼盐酸盐,操作简便,收率92%25,易于放大制备。