A General, Activator-Free Palladium-Catalyzed Synthesis of Arylacetic and Benzoic Acids from Formic Acid
作者:Lin Wang、Helfried Neumann、Matthias Beller
DOI:10.1002/anie.201802384
日期:2018.6.4
carboxylative synthesis of arylacetic and benzoic acids using formic acid (HCOOH) as the CO surrogate was developed. In an improvement over previous work, CO is generated in situ without the need for any additional activators. Key to success was the use of a specific system consisting of palladium acetate and 1,2‐bis((tert‐butyl(2‐pyridinyl)phosphinyl)methyl)benzene. The generality of this method is demonstrated
开发了一种新的用于甲酸(HCOOH)作为CO代用品的芳酸和苯甲酸羧化合成的催化剂。在对先前工作的改进中,无需任何其他活化剂即可原位生成CO。成功的关键是使用由乙酸钯和1,2-双((叔丁基(2-吡啶基)膦基)甲基)苯组成的特定系统。在温和条件下以高收率合成30多种羧酸,包括非甾体类抗炎药(NSAIDs),证明了这种方法的普遍性。