well-established reaction for the amide synthesis from organic azides and carboxylic acids in the presence of phosphorous reagents. In contrary to this, it is notable that bis azide in the presence of triethylphosphite or trimethylphosphite does not afford the expected bis amides but affords the ethyl or methyl esters of the carboxylic acids respectively. This serendipitous observation when further investigated
mediate ester synthesis from carboxyl acids and alcohols/phenols. Carboxylic acids are transformed to trifluoromethyl ester and acyl fluoride activated species that interact with each other. The broad substrate scope and late-stage application of this method are demonstrated. This study opens up new opportunities to develop interesting reactionsusing Cu(III)–CF3 compounds without transferring a CF3
Cu( III )–CF 3化合物在本文中被报道为新型偶联剂,可介导羧酸和醇/酚的酯合成。羧酸转化为三氟甲酯和酰基氟活化物质,它们相互作用。证明了该方法的广泛底物范围和后期应用。这项研究开辟了新的机会,可以使用 Cu( III )–CF 3化合物开发有趣的反应,而无需将 CF 3基团转移到产品中。