Primary Amines by Transfer Hydrogenative Reductive Amination of Ketones by Using Cyclometalated Ir<sup>III</sup>Catalysts
作者:Dinesh Talwar、Noemí Poyatos Salguero、Craig M. Robertson、Jianliang Xiao
DOI:10.1002/chem.201303541
日期:2014.1.3
Cyclometalated iridiumcomplexes are found to be versatile catalysts for the direct reductive amination (DRA) of carbonyls to give primary amines under transfer‐hydrogenation conditions with ammonium formate as both the nitrogen and hydrogen source. These complexes are easy to synthesise and their ligands can be easily tuned. The activity and chemoselectivity of the catalyst towards primary amines
An iridium-catalyzed hydrogentransfer strategy, enabling straightforward access to tetrahydropyridine derivatives from aryl-1,8-naphthyridines and indolines was developed. This method has unprecedented advantages, including high step economy. In addition, it does not produce any byproducts or require an external high-pressure H2 gas source. The method offers an important platform for the transformation
开发了一种铱催化的氢转移策略,可以直接从 aryl-1,8-naphthyridines 和二氢吲哚获得四氢吡啶衍生物。这种方法具有前所未有的优势,包括高步骤经济性。此外,它不会产生任何副产品,也不需要外部高压 H 2气源。该方法为将 1,8-萘啶和二氢吲哚转化为功能化产品提供了重要平台。