[F:1][C:2]1[CH:16]=[CH:15][C:5]([CH2:6][O:7][C:8]2[CH:14]=[CH:13][C:11]([NH2:12])=[CH:10][CH:9]=2)=[CH:4][CH:3]=1.[CH3:17][N:18]([O:22][CH3:23])[C:19](Cl)=[O:20].N1C=CC=CC=1.Cl.N1C=CC=CC=1>C1C=CC=CC=1.O>[F:1][C:2]1[CH:16]=[CH:15][C:5]([CH2:6][O:7][C:8]2[CH:14]=[CH:13][C:11]([NH:12][C:19]([N:18]([CH3:17])[O:22][CH3:23])=[O:20])=[CH:10][CH:9]=2)=[CH:4][CH:3]=1To a solution of 4-(4-fluorobenzyloxy)aniline (21.7 g) in benzene (150 ml), N-methyl-N-methoxycarbamyl chloride (14.7 g) and pyridine (11.8 g) are added thereto, and the reaction mixture is heated under reflux for 17 hours. The reaction mixture is cooled to room temperature, and water is added thereto to dissolve the by-produced pyridine hydrochloride. After separation of the aqueous layer, the benzene layer is washed with dilute hydrochloric acid and water in that order, dried and concentrated in vacuo to give N-[4-(4-fluorobenzyloxy)phenyl]-N'-methyl-N'-methoxyurea (Compound No. 3) (11 g) as white plates. M.P., 123° to 124.5° C.
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