An efficient and facile method for the synthesis of trifluoromethylthiolated 5-hydroxy-1H-pyrazole derivatives by reaction of pyrazolin-5-ones with trifluoromethanesulfenamide (PhNHSCF₃) in the presence of BiCl₃ was developed.

中文翻译：

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铋（III）促进吡唑啉-5-酮与三氟甲烷亚磺酰胺的三氟甲基硫醇化

开发了一种高效且简便的方法，用于在吡咯啉-5-酮与三氟甲磺酰胺（PhNHSCF ₃）的存在下，在BiCl ₃的存在下合成三氟甲基硫醇化的5-羟基-1 H-吡唑衍生物。