4-{3-[4-(1-chloroethyl)phenylthio]-5-fluorophenyl}-4-methoxytetrahydropyran 、
羟基脲 反应 2.0h,
以to give N-{4-[5-fluoro-3-(4-methoxytetrahydropyran-4-yl)phenylthio]-α-methylbenzyloxy}urea in 32% yield, m.p. 84°-85° C.的产率得到N-{4-[5-fluoro-3-(4-methoxytetrahydropyran-4-yl)phenylthio]-α-methylbenzyloxy}urea