Found in biomolecules, pharmaceuticals, and agrochemicals, amide-containing molecules are ubiquitous in nature, and their derivatization represents a significant methodological goal in fluorine chemistry. Trifluoromethyl amides have emerged as important functional groups frequently found in pharmaceutical compounds. To date, there is no strategy for synthesizing N-trifluoromethyl amides from abundant organic carboxylic acid derivatives, which are ideal starting materials in amide synthesis. Here, we report the synthesis of N-trifluoromethyl amides from carboxylic acid halides and esters under mild conditions via isothiocyanates in the presence of silver fluoride at room temperature. Through this strategy, isothiocyanates are desulfurized with AgF, and then the formed derivative is acylated to afford N-trifluoromethyl amides, including previously inaccessible structures. This method shows broad scope, provides a platform for rapidly generating N-trifluoromethyl amides by virtue of the diversity and availability of both reaction partners, and should find application in the modification of advanced intermediates.

在生物分子、药物和农用化学品中发现的含酰胺分子在自然界中无处不在，它们的衍生化代表了氟化学的重要方法学目标。三氟甲基酰胺已成为药物化合物中常见的重要官能团。迄今为止，还没有从丰富的有机羧酸衍生物合成N-三氟甲基酰胺的策略，有机羧酸衍生物是酰胺合成的理想原料。在这里，我们报告了N的合成-三氟甲基酰胺从羧酸卤化物和酯在温和条件下通过异硫氰酸酯在氟化银存在下在室温下。通过这种策略，异硫氰酸酯用 AgF 脱硫，然后将形成的衍生物酰化以提供N-三氟甲基酰胺，包括以前无法获得的结构。该方法适用范围广，凭借两个反应伙伴的多样性和可用性，为快速生成N-三氟甲基酰胺提供了平台，并应在高级中间体的改性中找到应用。