Disclosed is a process for the preparation of toltrazuril of formula (I) via the intermediate N-methyl-N′-[3-methyl-4-[4-[(trifluoromethyl)thio]phenoxy]phenyl] imidodicarbonic diamide of formula (III)
wherein intermediate (III) is obtained via a novel intermediate without the use of potentially hazardous reagents or potentially unstable intermediates.
揭示了一种制备化合物I(toltrazuril)的方法,该方法通过中间体化合物III(N-甲基-N'-[3-甲基-4-[4-[(三
氟甲基)
硫基]苯氧基]苯基]亚二碳酰二胺)制备,其中中间体(III)是通过一种新型中间体获得的,而不需要使用潜在的危险试剂或潜在的不稳定中间体。