Asymmetric meso-CF₃-dipyrromethanes with amino- and nitrogen heterocyclic functions, a new family of the BODIPY dye precursors, have been synthesized in 70-90% yield by condensation of trifluoro(pyrrolyl)ethanols with pyrroles in the presence of AlCl₃. This catalyst, for the first time, was shown to be more efficient than commonly used P₂O₅, which was entirely inactive in the condensation of pyrroles having basic substituents (amino group and pyrazole moiety).

中文翻译：

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三氟（吡咯基）乙醇和吡咯具有氨基和杂环功能的不对称内消旋-CF _3-二吡咯甲烷

具有氨基和氮杂环功能的不对称内消旋-CF _3-二吡咯甲烷，是BODIPY染料前体的一个新家族，通过在AlCl ₃存在下三氟（吡咯基）乙醇与吡咯的缩合反应以70-90％的产率合成。该催化剂首次显示出比通常使用的P ₂ O ₅更有效，该催化剂在具有碱性取代基（氨基和吡唑部分）的吡咯的缩合中完全不活泼。