A method for the direct synthesis of N-aryl lactams and amides with arylhalides and N-chloroamides through a Ni-catalyzed reductive C–N coupling reaction has been developed. The reaction features the advantages of mild conditions, good functional group tolerance and broad substrate scope including drug-derived substrates, and also provided direct access to the key synthetic intermediates for some
开发了一种通过 Ni 催化还原 C-N 偶联反应直接合成N-芳基内酰胺和酰胺与芳基卤和N-氯酰胺的方法。该反应具有条件温和、官能团耐受性好、底物范围广泛(包括药物衍生底物)等优点,并且还为一些生物活性分子的关键合成中间体提供了直接途径,表明该方法的实用性。最后,进行DFT计算以进一步阐明反应机理,发现可能涉及酰胺基。
Practical povidone iodine catalyzed transamidation from primary amides and amines
Non-harmful Povidone iodine (PVP-I) was applied in the transamidation to gain N-substituted amidesfrom various primary amides and amines. Diverse aromatic, heterocyclic and aliphatic primary amides/amines were applied in our developed method and more than 45 N-substituted amides were obtained with excellent yields in most cases. Several drugs such as Melatonin and Efaproxiral were successfully acquired