Heterobimetallic lanthanide–sodium alkoxides Ln₂Na₈(OCH₂CF₃)₁₄(THF)₆ catalyzed the reaction of esters and amines to produce amides in up to 99 % yields. They showed high catalytic activity for a wide scope of substrates under solvent‐free conditions. The cooperation of lanthanum and sodium alkoxide is proposed to account for the good activity.

中文翻译：

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异双金属镧系元素-醇钠催化酯的酰胺化

异双金属镧系元素-醇钠Ln ₂ Na ₈（OCH ₂ CF ₃）₁₄（THF）₆催化酯和胺的反应，以高达99％的产率生产酰胺。在无溶剂条件下，它们对多种底物均显示出高催化活性。提出镧和醇钠的配合以说明良好的活性。